EASY
CAT
IMPORTANT
Earn 100

In a school, of the number of girls is equal to of the number of boys. Find the ratio between the number of boys to the number of girls.
(a)
(b)
(c)
(d)

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Important Questions on Ratio, Proportion and Variation
MEDIUM
CAT
IMPORTANT
men and boys can do a piece of work in days, while men and boys can do it in days. Men and boys are paid wages according to their output. If the daily wage of a man is , then find the daily wage of a boy.

MEDIUM
CAT
IMPORTANT
The ratio of the economy and business class fares between two airports is and that of the number of passengers travelling by economy and business classes is . If on a day are collected as total fare, find the amount collected from the business class passengers.

MEDIUM
CAT
IMPORTANT
In an innings of a cricket match, three players X, Y and Z scored a total of runs. If the ratio of the number of runs scored by X to that scored by Y was and the number of runs scored by Y to that scored by Z was , find the number of runs scored by X?

MEDIUM
CAT
IMPORTANT
If the work done by men in days is to the work done by men in days is in the ratio , then find the value of .

HARD
CAT
IMPORTANT
The duration of a railway journey varies as the distance and inversely as the velocity, while the velocity varies directly as the square root of the quantity of coal used, and inversely as the number of carriages in the train. In a journey of in half an hour with carriages, of coal is required. How much coal will be consumed in a journey of in minutes with carriages?

MEDIUM
CAT
IMPORTANT
The mass of a circular disc varies as the squares of the radius when the thickness remains the same, and also varies as the thickness when the radius remains the same. Two discs have their thicknesses in the ratio , find the ratio of the radii, if the mass of the first is thrice that of the second.

MEDIUM
CAT
IMPORTANT
If and are positive integers, then always lies between _____.

HARD
CAT
IMPORTANT
The cost of digging a pit was . How much will it approximately cost, if the wages of workmen per day increased by times the former wages and the length of the working day increased by times the former period?
