Today I'm going to discuss a problem related to bar charts in Data interpretation. In almost every bank exam, one set is always asked from this section in Quantitative aptitude. I'm going discuss the problem with a same pattern which has already been asked in so many exams.

## Steps to solve problems of Data Interpretation: Bar-Charts

- Study the chart first and have an idea about the values presented in the form of bar-charts.
- To make the problem simple get an idea about the range of values presented in bar-chart.
- If you want to save your time, read the question and just concentrate on bar-chart itself and do the calculations on it.

**Problem1:**Study the following graph and answer the questions:

**Solution:**First of all, study the chart and analyze it. You will come to know the following points:

- X-Axis `to` Restaurants (P, Q, R, Sand T)
- Y-Axis `to` Amounts in kilograms (Lies between 400-900)
- Three bars `to` Rice, Wheat and Sugar

⇒`(9450)/5`

Let Rice consumed by restaurant R = A i.e. `500`

rice consumed by all restaurants together= B i.e. `800+ 600+ 500+ 800+ 700` = `3400`

So, A = `x`% of B

⇒ `x`= `A/B times 100`

⇒ `x`= `(500)/(3400) times 100`

⇒`x` = `14.7`%

4. Difference between the average amount of wheat and average amount of sugar consumed by all restaurants together.

⇒`3500/5`

⇒ `700`

Average amount of sugar by all restaurants = B =`(500+ 550+ 400+ 600+ 500)/5`

⇒`2550/5`

⇒`510`

Difference = `A-B` = `700- 510`

⇒ `190`kg

You are free to ask anything. I will try to update more problems soon.

Problem related to Data interpretation: Tables.

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