✏️ Practice Exercises

Percentages

5 problems · Easy to Hard · Type your working · AI checks your steps

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How to use these exercises

Read the question → work it out step-by-step in the box → click Check My Working to get AI feedback. Use hints if stuck. Reveal the full solution only after you have tried.

01

easy

What is 35% of 240?

💡 Show hint

Multiply by 35/100.

Your Working

02

easy

A number is increased from 80 to 100. What is the percentage increase?

💡 Show hint

Percentage change = (New − Old) / Old × 100.

Your Working

03

medium

After a 20% discount, an item costs ₹480. What was the original price?

💡 Show hint

After 20% off, you pay 80% of original. Original = paid ÷ 0.8.

Your Working

04

medium

A shopkeeper offers two successive discounts of 20% and 10%. What is the equivalent single discount?

💡 Show hint

Equivalent = a + b − ab/100.

Your Working

05

hard

A student's marks were wrongly entered as 83 instead of 63. As a result the average marks of the class went up by 1/2. The number of students in the class is:

💡 Show hint

Excess in total = 20. Increase in average is 0.5. Students = excess / increase.

Your Working

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