If 40% of a number is equal to two – third of another number, what is the ratio of first number to the second number ?
2 : 5
3 : 7
5 : 3
7 : 3
Divide 45 sweets between Panchu and Paru in the ratio 2 : 3. Then how many sweets will each of them get ?
18, 27
16, 27
14, 31
15, 30
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
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
What is the ratio of black stars to red stars ?
5 : 2
7 : 2
2 : 7
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
10 : 3
11 : 5
The simplest form of 25 : 40 is
8 : 5
6 : 5
5 : 8
5 : 6
The ratio of milk and water in 85 kg. of adulterated milk is 27 : 7. The amount of water which must be added to make the ratio 3 : 1 is :
5 kg
6.5 kg
7.25 kg
8 kg
729 ml of a mixture contains milk and water in the ratio 7 : 2. How much more water is to be added to get a new mixture containing milk and water in the ratio 7 : 3 ?
600 ml
710 ml
520 ml
None of these
