Ratios And PercentagesPractice Questions

If the side of a square is measured 5% more than its actual length, what is the percentage error in calculating its area?

In an election between two candidates, the winning candidate got 55% of total votes and won by 1200 votes. How many votes did the losing candidate get?

In what ratio must tea costing ₹60 per kg be mixed with tea costing ₹80 per kg so that the mixture costs ₹70 per kg?

A salesman gets a commission of 8% on sales up to ₹50,000 and 12% on sales exceeding ₹50,000. If he earns ₹7600 commission on total sales of ₹80,000, what was his commission rate on excess sales?

A student needs 40% marks to pass an exam. He gets 178 marks and fails by 22 marks. What is the maximum marks for the exam?

A solution contains 20% acid. How much water should be added to 100 ml of this solution to reduce the acid concentration to 10%?

If the speed of a train is increased by 20%, by what percentage will the time taken to cover the same distance decrease?

A and B invest ₹30,000 and ₹20,000 respectively. After 6 months, A withdraws ₹10,000 while B invests additional ₹10,000. What is their profit sharing ratio at the end of the year?

Two circles have radii in the ratio 3:4. What is the ratio of their areas?

A article is marked 60% above its cost price. During a sale, a discount of 25% is given. What is the profit percentage?