What the examiner is looking for
Mixed charts test something that single-visual tasks do not: can you synthesize information from two different sources? The examiner is not just checking your vocabulary or grammar — they are checking whether you can hold two sets of data in your head and weave them into one coherent report.
The three rules that separate Band 6 from Band 8
Rule 1: Your overview must cover both charts. Not one sentence about Chart 1, then one sentence about Chart 2. A genuine overview captures the big picture of both visuals in a way that shows they belong together. If your overview could be split into two unrelated statements, it is not an overview — it is two summaries.
Rule 2: Show the connection, do not just describe separately. The examiner has both charts in front of them. They can see the data. What they want is your ability to connect the information. A bar chart showing total consumption and a pie chart showing breakdown by sector are not two unrelated tasks — the pie chart explains where the bar chart total goes.
Rule 3: At least one sentence must draw from both charts. This is the move that scores Band 8. Take a number from one chart and combine it with information from the other. "Given that total consumption reached 60 billion litres in 2020, agricultural use alone accounted for approximately 25 billion litres." That sentence uses data from both visuals — and it shows the examiner you can think across charts.
Mixed charts are the ultimate test of your writing organisation. The examiner wants to see that you can hold two sets of information in your head and weave them into one coherent report. Students who write two mini-reports get Band 6. Students who connect the visuals get Band 8. The connection is worth more than any vocabulary trick.
Now let us write one — step by step
Below are two IELTS-style visuals: a bar chart and a pie chart. We are going to write a complete Band 8 report on them, one paragraph at a time. At each step, you will see exactly which part of the data we are focusing on and why.
Do not start writing yet. Look at both visuals and ask: how are these two charts related? One shows the total over time. The other shows the breakdown in the final year. The connection is clear — the pie chart explains where that growing total goes.
The story: Water consumption in Riverdale City grew by 50% over twenty years — and agriculture was the single biggest reason, taking nearly half of the total by 2020. That is the connection. You just found the structure of your entire report.
The introduction paraphrases the task prompt. For mixed charts, you must mention both visuals in one sentence. Do not write two separate introductions. Show the examiner that you see the two charts as parts of one story.
The bar chart illustrates total annual water consumption in Riverdale City between 2000 and 2020, while the pie chart provides a breakdown of how this water was used across four sectors in 2020.
Notice: both visuals are covered in one sentence. "Shows" became "illustrates" and "provides a breakdown." The word "while" connects the two halves naturally. The examiner can see immediately that you understand both charts belong together.
The overview must capture the big picture of both visuals. Not one sentence per chart — but a genuine summary that shows the connection. This is the most important paragraph in your entire report.
Overall, water consumption in Riverdale City increased by 50% over the two decades, with agriculture accounting for the largest share of this usage by 2020.
One sentence. Both charts covered. The bar chart trend (50% increase) is linked directly to the pie chart finding (agriculture dominant). That is an integrated overview — not two separate summaries.
Now describe the bar chart in detail. Focus on the trend over 20 years — the overall rise, the dip in 2015, and the recovery to the highest point by 2020.
In 2000, Riverdale City consumed 40 billion litres of water annually. This figure rose steadily over the following decade, reaching 55 billion litres by 2010. Although there was a slight dip to 52 billion litres in 2015, consumption recovered and climbed to its highest point of 60 billion litres in 2020 — representing a 50% increase over the twenty-year period.
The paragraph follows the trend chronologically: start, steady rise, dip, recovery. The phrase "a 50% increase" quantifies the overall change rather than just listing five separate numbers. That is trend description, not data listing.
Now describe the pie chart — but do not just list percentages. Show the hierarchy, group the smaller sectors, and then connect back to the bar chart with at least one sentence that draws from both visuals. This is the Band 8 move.
The pie chart reveals that agriculture was by far the dominant sector, accounting for 42% of total water use in 2020. Domestic consumption was the second largest category at 28%, while industrial use and public services together comprised the remaining 30%, at 19% and 11% respectively. Given that total consumption reached 60 billion litres in 2020, agricultural use alone accounted for approximately 25 billion litres — more than double what was used by public services and industry combined.
The last sentence is the key. It takes 42% from the pie chart and 60 billion from the bar chart, multiplies them, and produces a real-world figure. That sentence alone tells the examiner you can synthesize information from two different sources — which is exactly what mixed charts are testing.
The difference this makes
Here is the same data handled two different ways. One treats the two charts as separate tasks. The other weaves them into one coherent analysis.
"The bar chart shows water consumption rose from 40 to 60 billion litres. Now I will describe the pie chart. Agriculture was 42%. Domestic was 28%. Industrial was 19%. Public services was 11%."
"Water consumption rose by 50% over two decades, with agriculture accounting for the largest share. Given that total consumption reached 60 billion litres, agricultural use alone represented approximately 25 billion litres."
The complete report — all together
Here is the full report we just built, assembled into a single piece. Four paragraphs. Around 190 words. Two charts, one coherent analysis. This is what a Band 8 mixed charts report looks like.
The bar chart illustrates total annual water consumption in Riverdale City between 2000 and 2020, while the pie chart provides a breakdown of how this water was used across four sectors in 2020.
Overall, water consumption in Riverdale City increased by 50% over the two decades, with agriculture accounting for the largest share of this usage by 2020.
In 2000, Riverdale City consumed 40 billion litres of water annually. This figure rose steadily over the following decade, reaching 55 billion litres by 2010. Although there was a slight dip to 52 billion litres in 2015, consumption recovered and climbed to its highest point of 60 billion litres in 2020 — representing a 50% increase over the twenty-year period.
The pie chart reveals that agriculture was by far the dominant sector, accounting for 42% of total water use in 2020. Domestic consumption was the second largest category at 28%, while industrial use and public services together comprised the remaining 30%, at 19% and 11% respectively. Given that total consumption reached 60 billion litres in 2020, agricultural use alone accounted for approximately 25 billion litres — more than double what was used by public services and industry combined.
Read that report again. Four paragraphs. Around 190 words. But the key moment is one sentence in the last paragraph — where we calculate that 42% of 60 billion equals roughly 25 billion litres. That single sentence connects both charts and shows the examiner you can think, not just describe. One connecting sentence is worth more than ten perfectly described data points.