EASY
CAT
IMPORTANT
Earn 100

In a school, 5% of the number of girls is equal to 110 of the number of boys. Find the ratio between the number of boys to the number of girls. 

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Important Questions on Ratio, Proportion and Variation

MEDIUM
CAT
IMPORTANT
2 men and 4 boys can do a piece of work in 10 days, while 4 men and 5 boys can do it in 6 days. Men and boys are paid wages according to their output. If the daily wage of a man is 40, then find the daily wage of a boy.
MEDIUM
CAT
IMPORTANT
The ratio of the economy and business class fares between two airports is 4:1 and that of the number of passengers travelling by economy and business classes is 1:40. If on a day 1100 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 580 runs. If the ratio of the number of runs scored by X to that scored by Y was 3:2 and the number of runs scored by Y to that scored by Z was 5:2, find the number of runs scored by X?
MEDIUM
CAT
IMPORTANT
If the work done by p men in (p+2) days is to the work done by (p+4) men in (p-1) days is in the ratio 1:1, then find the value of p.
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 50 km in half an hour with 18 carriages, 100 kg of coal is required. How much coal will be consumed in a journey of 42 km in 28 minutes with 16 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 16:3, find the ratio of the radii, if the mass of the first is thrice that of the second.
MEDIUM
CAT
IMPORTANT
If p and q are positive integers, then 2 always lies between _____.
HARD
CAT
IMPORTANT
The cost of digging a pit was 2694. How much will it approximately cost, if the wages of workmen per day increased by 18 times the former wages and the length of the working day increased by 120 times the former period?