A’s capital is equal to thrice B’s capital and B’s capital is 4 times C’s capital. The ratio of the capitals is :
1 : 3 : 12
12 : 4: 1
3 : 1 : 4
1 : 3 : 4
Gold is 19 times as heavy as water and copper 9 times as heavy as water. The ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water, is
1 : 2
2 : 3
3 : 2
19 : 135
An alloy consists of Iron and Zinc in the ratio 2 : 3. How much Zinc is there in 25 kg of the alloy ?
12 kg
13 kg
14.5 kg
15 kg
A father’s age was 5 times his son’s age 5 years ago and will be 3 times the son’s age after 2 years. The ratio of their present ages is
5 : 2
5 : 3
10 : 3
11 : 5
What is the ratio of black stars to red stars ?
2 : 5
7 : 2
2 : 7
The ratio of number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1 ?
90
120
220
240
In a mixture of 35 liters, the ratio of milk and water is 4 : 1. Another 7 liters of water is added to mixture. Then the ratio of milk and water in the resulting mixture is
2 : 1
3 : 1
Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000 the new ratio becomes 40 : 57. What is Sumit’s salary ?
Rs. 17,000
Rs. 20,000
Rs. 25,000
Rs. 38,000
A and B together have Rs. 1210. If 4/15 of A’s amount is equal to 2/5 of B’s amount, How much amount does B have ?
Rs. 460
Rs.484
Rs. 550
Rs. 664
Find three numbers in the ratio of 2 : 3 : 5 such that the sum of their squares is 608.
18, 2, 20
2, 4, 76
8, 12, 20
4, 2, 72