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 ?
1200
2340
1080
880
960
Option 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.
180
300
120
140
420
Option 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 ?
1240
940
480
1050
1280
Option 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 ?
4500
3450
6300
5200
7800
Option 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.
1520
2000
1470
3800
2540
Option 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 ?
14000
18000
35000
20000
11000
Option 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 ?
40
80
25
62
20
Option 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 ?
2/5
5/9
4/9
2/3
4/11
Option 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 ?
3800
3200
4500
4200
6500
Option 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 ?
520
644
440
634
460
Option 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
