If 3: 5 = 12 : 20 then find the value of x in the relation 3 : 12 = x : 20

The ratio of 1.5 m to 10 cm is:

There are 30 boys and 20 girls in a class. The ratio of the number of boys to the number of girls is _________________

 Compare the following ratios: 4 : 7 and 5 : 8

7 : 12 is equivalent to  ________________________

The mean proportional of  9 and 16 is ?

There are 30 boys and 50 girls in a class. The ratio of the number of girls to the number of boys is ___________________

If    , then find the value of x .

The first three terms of a proportion are  3 , 5 and 21 respectively . Find its fourth term ?

Identify equivalent ratios:

9 : 24 , 6 : 16, 12 : 32

Ishu and Nishu are two sisters having pencils 55 and 99 respectively. Compare their pencils .

 Compare the following ratios: 3 : 4  and 9 : 16

There are 25 boys and 25 girls in a class. The ratio of the number of boys to the total students is ___________________

The earnings of Rohan is 12000 rupees every month and Anish is 191520 per year. If the monthly expenses of every person are around 9960 rupees. Find the ratio of the savings.

Which of the following ratios are equivalent:

(1)  2 : 4

(2)  10: 20

(3) 0.5 : 1

(4)  6 : 12