Percentage – Set 7

1) If A is equal to 20% of B and B is equal to 25% of C. Then what percentage of C equal to A ?

2) The number that is to be added to 10% of 320 to have the sum as 30% of 230 is :

3) 25% of 120 + 40% of 380 = ? of 637

5) In an examination a candidate must secure 40% marks to pass. A candidate, who gets 220 marks, fails by 20 marks. Find the maximum marks for the examination ?

7) A student multiplied a number by 35“>3/5 instead of 53“>5/3 What is the percentage error in the calculation?

8) What percentage of numbers from 1 to 70 have 1 or 9 in the unit’s digit?

9) The price of an article was first increased by 10% and then again by 20%. If the last increased price was Rs. 33, the original price was :

10) If P% of P is 36, then P is equal to :

11) 31% of employees pay tax in the year 2008. Non-tax paying employees are 20700. The total number of employees is :

12) Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.

13) Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:

14) What % of a day is 30 minutes ?

15) In a mixture there is 15% of salt. When 30 liter of water is evaporated, salt becomes 20% of mixture. Find the initial quantity of mixture.

16) If 20% of a = b, then b% of 20 is the same as:

17) The percentage of metals in a mine of lead ore is 60%. Now the percentage of silver is 34“>3/4% of metals and the rest is lead. If the mass of ore extracted from this mine is 8000 kg, the mass (in kg.) of lead is :

18) In an election 4% of the votes caste become invalid. Winner gets 55% of casted votes and wins the election by a margin of 4800 votes. Find the total number of votes casted.

19) A scored 72% in a paper with a maximum marks of 900 and 80% in another paper with a maximum marks of 700. If the result is based on the combined percentage of two papers, the combined percentage is :

20) What percentage of 3.6 kg is 72 gms. ?

21) What is 20% of 25% of 300 ?

22) 0.01 is what percent of 0.1 ?

23) Two tailors X and Y are paid a total of Rs. 550 per week by their employer. If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?

24) Raman’s salary is increased by 5% this year. If his present salary is Rs. 1806, the last year’s salary was :

27) Gauri went to the stationers and bought things worth Rs. 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?

28) If 80% of A = 50% of B and B = x% of A, then the value of x is :

29) If radius of a circle is increased by 5%, then the increase in it’s area is :

30) 0.001 is equivalent to :

31) A fruit seller had some apples. He sells 40% apples and still has 420 apples. Originally, he had:

32) In a class, the number of girls is 20% more than that of the boys. The strength of the class is 66. If 4 more girls are admitted to the class, the ratio of the number of boys to that of the girls is :

33) In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:

34) Rajeev buys good worth Rs. 6650. He gets a rebate of 6% on it. After getting the rebate, he pays sales tax @ 10%. Find the amount he will have to pay for the goods.

35) In an examination 70% of the candidate passed in English, 80% passed in Mathematics, 10% failed in both subjects. If 144 candidates passed in both, the total number of candidates was :

36) If A exceeds B by 40%, B is less than C by 20%, then A : C is

37) If A = x% of y and B = y% of x, then which of the following is true?

38) The tax imposed on an article is decreased by 10% and its consumption is increased by 10%. Find the percentage change in revenue from it.

39) If 60% of A’s income is equal to 75% of B’s income, then B’s income is equal to x% of A’s income. The value of x is :

41) If 120 is 20% of a number, then 120% of that number will be :

42) 498 is 17% less than a number then the number is :

43) If ‘basis points’ are defined so that 1 percent is equal to 100 basis points, then by how many basis points is 82.5 percent greater than 62.5 percent.

44) If 30% of A is added to 40% of B, the answer is 80% of B. What percentage of A is B ?

45) The length of a rectangle is increased by 10% and breadth decreased by 10% Then the area of the new rectangle is :

46) A village lost 12% of its goats in a flood and 5% of remainder died from diseases. If the number left now is 8360. What was the original number before the flood ?

47) The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is:

48) The schedule working hour of a labour in a week if 48 hours and he gets Rs. 480 for that. Over time rate is 25% more than the the basic salary rate. In a week a labour gets Rs. 605, how many hours altogether he works in that week.