Arithmetic percentages Practice test by studybizz

1. Shivam Dube spent 15% of his monthly salary on entertainment, 20% on cricket coaching, 10% on household expenses, Y% on car repairing and 10% on shop- ping. If the difference between the amount on entertainment and shopping is Rs. 8000 and the savings is Rs.24,000, then find the value of Y?

2. A number is mistakenly divided by 5 instead of being multiplied by 5. Find the percentage change in the result due to this mistake?

3. In an election contest between three candidates A, B and C respectively. A got 20% more valid votes than B and B got 80% of the valid votes received by C who got 400 valid votes. If 8% votes are invalid, then find the total votes.

4. Reduction of 30% in the price of rice enables a purchaser to obtain 20 kg more for Rs.210. Then price per kg before reduction was…..

5. When the price of sugar increased by 28%, a family reduced its consumption per month such that the expenditure onsugar was only 12% more than the ear- lier one. If the family consumed 18.4 kg sugar per month earlier, then what is its new consumption of sugar per month?

6. A father gives 8% of his monthly income to his two sons as pocket money. The elder son gets 85% of the total pocket money given to both the sons and out of which he spends 90% of the amount and saves Rs. 17. What is monthly income of his father? (In Rs.)

7. 300 ml of acid solution contains 24% of the acid in it. How much acid should be added so that the concentration of the acid in the solution becomes 40%?

8. A number is increased by 20% and then again by 20%. By what percent should the increased number be reduced so as to get back the original number?

9. . In English test, a man scored 40% marks and failed by 40 marks. If he had scored 160 more marks, he would have got 60% of the total marks. Find the passing percentage.

10. In an examination 80% students passed in Physics, 70% in Chemistry while 15% failed in both the subjects. If 325 students passed in both the subjects. Find the total number of students who appeared in the exami- nation.