- The ratio of amount of A and B is 4 : 3 and the ratio of amount of B and C is 4 : 5 . If the total number of amount A , B and C have rs. 3870, then find the how much amount B have ? 120023401080880960Option C

Ratio of amount of A and B = 4 : 3

ratio of amount of B and C = 4 : 5

By multiplying ‘4’ in ratio of A and B

A : B = (4 : 3) 4 = 16 : 12

By multiplying ‘3’ in ratio of B and C

B : C = (4 : 5) 3 = 12 : 15

A : B : C = 16 : 12 : 15

let amount of A , B and C have = 16x , 12x and 15x

total = 43x

43x = 3870

x = 90

12x = 1080

B have = 1080 - Rabin has three types of coins i.e 10 paisa , 20 paisa and 50 paisa and total value of this coins is rs. 78. The number of coins is in the ratio of 6 : 4 : 5. Find the number 10 paisa coins. 180300120140420Option C

Let the number coins of 10 paisa , 20 paisa and 50 paisa is 6x, 4x and 5x respectively.

(10 * 6x) + (20 * 4x) + (50 * 5x) = rs. 78

60x + 80x + 250x = 78

390x = 7800

x = 20

The number 10 paisa coins = 6 * 20 = 120 - A sum of amount of rs. 3500 is divided between three friends. The ratio of amount given to P and Q is 2 : 3 and Q and R is 3 : 5. What is difference the amount given to P and R ? 124094048010501280Option D

Let the amount given to P and Q = 2x and 3x

Q and R = 3x and 5x

total amount = 3500

2x + 3x + 5x = 3500

10x = 3500

x = 350

difference = 5x – 2x = 3x = 3 * 350 = 1050 - Rohit gave half of his monthly salary to his parents and one-third of remaining salary to his wife and remaining his salary gave to his son and daughter in the ratio of 13 : 12. If his monthly salary is rs.45000, then find how much amount he gave to his son ? 45003450630052007800Option E

Rohit gave to his parents = 45000/2 = 22500

remaining salary = 45000 – 22500 = 22500

he gave to his wife = 22500 * 3 = 7500

remaining salary = 22500 – 7500 = 15000

he gave to his son = 15000 * 13/25 = 7800 - Two numbers are in the ratio of 4 : 3. When we added 60 in each number the ratio becomes 30 : 23. Find the sum of both initial numbers. 15202000147038002540Option C

Let two numbers is 4x and 3x

When we added 60

4x + 60 / 3x + 60 = 30/23

92x + 1380 = 90x + 1800

2x = 420

x = 210

total sum = 4x + 3x = 7x = 7 * 210 = 1470 - The ratio of income of Rahul and Raju in the ratio of 6 : 5 and they saved rs. 1500 each, Their expenditure ratio 9 : 7 , then find what is the sum of their incomes ? 1400018000350002000011000Option E

Let income of Rahul and Raju = 6x and 5x

they saved = 1500 each

6x – 1500 / 5x – 1500 = 9/7

42x – 10500 = 45x – 13500

3x = 3000

x = 1000

sum = 6x + 5x = 11 * 1000 = 11000 - There are total of 300 employees in a company. The ratio of male employees to female employees are 8 : 7. How many female employees have to be recruited so that the ratio

becomes male and female is equal ?4080256220Option E

Number of male = 300 * 8/15 = 160

number of female = 300 * 7/15 = 140

let ‘x’ number of female we added

160 = 140 + x

x = 20 - If the numerator is increased by 20 % and the denominator is decreased by 20% so that fraction becomes 2 : 3. What is the original fraction ? 2/55/94/92/34/11Option C

Let the numerator and denominator be x and y respectively

(x * 120/100) / (y * 80/100) = 2/3

(6x/5) /(4y/5) = 2/3

6x / 4y = 2/3

18x = 8y

x/y = 8 /18 = 4/9 - Total number of workers worked in a company is 50 and the ratio of male workers to female workers is 3 : 2. The ratio of amount of wages received by a male and a female worker is 7 : 6. If the wages received by each female workers is rs.120, then how much total wages received by all male workers ? 38003200450042006500Option D

Total workers = 50

male workers = 50 * 3/5 = 30

female workers = 50 * 2/5 = 20

wages received by a female workers = 120

wages received by a male workers = 120/6 *7 = 140

total wages received by all male workers = 140 * 30 = 4200 - Three friends A , B and C got a total prize money is rs.2149. If B got 15% more A and C got 20% less than B, then find the how much amount of money C get ? 520644440634460Option B

Total prize money = 2149

let A got = 100x

B got = 100x * 115/100 = 115x

C got = 115x * 80/100 = 92x

total = 100x + 115x + 92x = 307x

amount of money C got = 2149/307x * 92x = 644