Question 1

Sairam spent Rs. 38460 on the renovation of his home and Rs. 24468 on buying TV set and remained with 28% of the total amount. What was the total amount?

Accepted Answer

Let the total amount he had with = Rs. p From the given data, p - 38460 - 24468 = 28p/100 p - 28p/100 = 24468 + 38460 72p/100 = 62928 72p = 62928 x 100 p = 62928 x 100/72 p = 87400 Hence, the total amount he had = p = Rs. 87400.

Question 2

63.5% of 8924.2 +? % of 5324.4 = 6827.5862

Accepted Answer

63.5% of 8924.2 +? % of 5324.4 = 6827.5862 => 63.5% of 8925 + ? % of 5325 = 6830 => 6830 ~= 5320 + ?(5325)/100 => ? ~= 22

Question 3

445 of 229.79 = ? of 2398.51

Accepted Answer

Given 4 4 5 of 229 . 79 = ? of 2398 . 51 24 5 x 230 = ? x 2400 24 x 46 = ? x 2400 ? = 46 / 100 ? = 23 50

Question 4

P, Q and R secured 45%, 50% and 60% marks respectively in Biology. M’s marks in Biology is 12.5 more than P’s marks and 4 less than R’s marks. Find out the individual marks of four students. A. For the students, total marks obtained for Biology is 3…

Accepted Answer

From the given data, (60 - 45)% = 12.5 + 4 15% = 16.5 => 100% = ? 100% = 16.5 x 100/15 = 110 Hence, P = 45% of 110 = 45x110/100 = 49.5 Q = 50% of 110 = 55 R = 60% of 110 = 60 x 110/100 = 66 M = 12.5 + 49.5 = 62 or 66 - 4 = 62 Hence, no statement is required to answer.

Question 5

Dot cabs company provides cabs for software employees. The company has 8 Swift dzires, 6 Scorpios, 7 Innovas and few small cars. If Swift dzire makes one fourth of the total fleet, how many small cars are there in the company ?

Accepted Answer

Given the company has 8 SD + 6 SRP + 7 IN = 21 cars + 'x' small cars. Given SD makes 1/4 th of the total fleet. => 8 = 1/4 (21 + x) => 32 = 21 + x => x = 11 Therefore, the company has 11 small cars.

Question 6

The payment per hour for a daily-wages employee is increased by 33.33 and the working time is reduced by 33.33%. What is the percentage change in the employee's income ?

Accepted Answer

If earlier he is getting Rs. 1 per hr and working for 1 hr, income = Rs. 1 Now he is getting Rs 1.3333 per hr and working for 0.66667 hrs Then income for 0.66667 hrs = Rs. 0.8889. If payment per hr is increased by 33.33 % and working hours dereased by 33.33%, then 11.11 % decrease in income.

Question 7

Population of a colony of mosquitoes is increasing by 20% per day. If the population on Monday was 3000, on which day of that week the population would be 5184 ?

Accepted Answer

Given monday population = 3000 Per day 20% increase in population. Tuesday population = 3000 + 3000x20/100 = 3000 + 600 = 3600 Wednesday population =3600 + 3600x20/100 = 3600 + 720 = 4320 Thursday population = 4320 + 4320x20/100 = 4320 + 864 = 5184 So that day is Thursday.

Question 8

Three strategies P, Q and R have been initiated for cost cutting in a company producing respectively 20%, 30% and 10% savings. Assuming that they operate independently, what is the net saving achieved ?

Accepted Answer

As these three strategies P, Q and R are independent so these will cut cost one after the other. If initial cost is Rs 100, then 20% cost is cut after initializing strategy P, then cost will remain 80% = 80 further 30% cost is cut after strategy Q, then cost will remain 70% of 80 = 56 further 10% cost is cut after strategy R, then cost will remain 90% of 56 = 50.4 Thus final cost remains 50.4 % of the original cost. Hence net saving is 100 - 50.4 = 49.6 %.

Question 9

An individual deposited 20% of 25% of 30% of what he had into his account with a bank. If he deposited Rs.750, how much was he having initially with him before depositing ?

Accepted Answer

Let 'x' be the amount he had in the bank. => 20/100(25/100(30/100(x))) = 750 x = 750 x 8000/120 = Rs. 50000

Question 10

Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 10 meters and a circumference of 8 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of…

Accepted Answer

circumference of A = 2 πr = 8 => so r = 4 π volume = π × 4 π 2 × 10 = 160 π circumference of B = 2 πr = 10 => so r = 5 π volume = π × 5 π 2 × 8 = 200 π so ratio of capacities = 160/200 = 0.8 so capacity of A will be 80% of the capacity of B.

Question 11

Kalyan purchased a Maruti van for Rs. 1,96,000 and the rate of depreciation is 14(2/7) % per annum. Find the value of the van after two years ?

Accepted Answer

Value of Maruti Van, V1 = Rs. 1,96,000 Rate of depreciation, r = 14(2/7)% = 100/7%; Time, t = 2 years Let V2 is the value after depreciation. V 2 = V 1 1 - r 100 t V2 = 19600 1 - 100 7 100 2 V2 = 196000(6/7)(6/7) V2 = (196000x36)/49 = Rs. 1,44,000.

Question 12

A user type a content on 20 sheets, each sheet consist of 55 lines, and each line can have 66 characters. The content is again retyped on another set of sheets, these new sheets have 65 lines and each line can take 70 characters. Calculate the reduc…

Accepted Answer

20 x 55 x 66 = L x 65 x 70 Here L = 72,600/4550 = 15.95 =~ 16 Reduction is 20-16 = 4 which is 20% reduction.

Question 13

If L exceeds K by 30%, then K is less than L by ?

Accepted Answer

K = 100 L = 130 130------ 30 100------- ? => 23 1/13 %

Question 14

12% of 70,000 is

Accepted Answer

12% of 70,000 => 12 x 70,000/100 => 8400 Hence, 12% of 70,000 = 8,400

Question 15

75% of 450 + ? % of 560 = 600

Accepted Answer

75% of 450 + ? % of 560 = 600 75 x 450 100 + ? x 560 100 = 600 75 x 9 2 + 28 p 5 = 600 75 x 9 x 5 + 56 p 10 = 600 3375 + 56 p = 6000 56 p = 2625 p = 46 . 875 Hence, in the given question ? = 46.875

Percentage Questions