Percentage SSC-Maths (Part-7)

Total Questions: 50

11. The number of books on Mathematics, Physics and Chemistry in a University library is in the ratio 8:5:9. There is a proposal to increase these books by 10%, 5% and 5% respectively. What will be the ratio of the number of books after increment? [SSC CGL 02/12/2022 (4th Shift)]

Correct Answer: (c) 176:105:189
Solution:

12. Ram loses 12½ % of his money and after spending 75% of the remainder, is left with ₹630. How much money did Ram have initially? [SSC CGL 03/12/2022 (1st Shift)]

Correct Answer: (b) ₹2,880
Solution:

13. Mr. X has a monthly income of $26,500 and his monthly expenditure is $20,500. The next year, his salary is increased by 12% and expenditure is increased by 6%. His savings increase by how much percent? [SSC CGL 05/12/2022 (3rd Shift)]

Correct Answer: (a) 32.5%
Solution:

14. During the first year, the population of a town increased by 12%. The next year, due to some contagious disease, it decreased by 8%. At the end of the second year, the population was 64,400. Find the population of the town at beginning of the first year. [SSC CGL 05/12/2022 (4th Shift)]

Correct Answer: (c) 62,500
Solution:

Let, the populaion at the

15. Two candidates P and Q contested in an election. 70% of the registered voters are P supporters. If 60% of the P supporters and 30% of the Q supporters are expected to vote for candidate P, then what percentage of the registered voters are expected to vote for candidate P? [SSC CGL 06/12/2022 (1st Shift)]

Correct Answer: (b) 51%
Solution:

16. If the price of petrol is increased by 28%, by what percentage should the consumption be decreased by the consumer, if the expenditure on petrol remains unchanged? (Correct to 2 decimal places) [SSC CGL 06/12/2022 (3rd Shift)]

Correct Answer: (b) 21.88%
Solution:

17. 20% of the inhabitants of a village having died of malaria, a panic set in, during which 30% of the remaining inhabitants left the village. The population was then reduced to 12,000. What was the number of inhabitants initially (Consider integral part only) [SSC CGL 07/12/2022 (2nd Shift)]

Correct Answer: (b) 21428
Solution:

18. Three candidates were participating in an election. The person at third place got 20% of the total votes while the difference between the votes of the winner and the first runner up was 20% of the total votes. If the difference between the votes of the first runner up and the second runner up was 37,000, how many votes did the winner receive? [SSC CGL 07/12/2022 (4th Shift)]

Correct Answer: (b) 1,85,000.
Solution:

19. In the first year the population of a town decreased by 5% due to the Corona virus first wave. In the next year it decreased again by 5% due to the second wave and in the third year it increased by 5%. At the end of the third year the population was 9,47,625. What was the population at the beginning of the first year? [SSC CGL 08/12/2022 (3rd Shift)]

Correct Answer: (b) 10,00,000
Solution:

Let the population at the beginning of the year be 𝓍

20. Three candidates P, Q and R participated in an election. P got 35% more votes than Q, and R got 15% more votes than Q, P overtook R by 2,412 votes. If 90% of voters voted and no invalid or illegal votes were cast, then what was the number of voters in the voting list? [SSC CGL 09/12/2022 (1st Shift)]

Correct Answer: (a) 46,900
Solution: