Number of students in institutes A and B were in the ratio of 7 : 15 respectively in 2012. In 2013, the number of studen…

Which of the following represents a correct proportion ?

A person bought some rice and wheat for Rs. 380. The ratio of weight of rice and wheat is 4 : 3 and the price equal amo…

In an alloy, the ratio of copper and zinc is 5 : 2. If 1.250 kg of zinc is mixed in 17 kg 500 gm of alloy, then the rati…

Ram got twice as many marks in English as in Science. His total mark in English, Science and Math are 180. If the ratio …

Two numbers are in the ratio 17 : 45, One - third of the smaller is less than $$\frac{1}{5}$$ of the bigger by 15. The s…

If 8a = 9b then the ratio of $$\frac{{\text{a}}}{9}$$ to $$\frac{{\text{b}}}{8}$$ is

a : b : c = 2 : 3 : 4 and 2a - 3b + 4c = 33, then the value of c is = ?