The compound ratio of the inverse ratios of the ratios x : y, y : z, z : x will be:-
If x and y are rational numbers and then x : y will be equal to:
A fruit seller sold three varieties of fruits at the rate of Rs 20, Rs 25 and Rs 27. If the quantity of the fruits sold were in the ratio 1 : 2 : 5 find the average rate of the fruits.
In a school the total number of students was 350 and the ratio of the number of boys and girls was 4: 3. After a few days 30 girls joined the school but a few boys left, as a result the ratio of the boys and the girls became 5: 6. Find the number of boys who left the school.
In a factory the salary of each worker is increased in the ratio 4: 5, but the number of workers is decreased by %. Find the net effect on the salary.
The average score of a class of boys and girls in an examination is x. The ratio of boys and girls in the class is 5 : 3. If the average score of the boys is x + 3, find the average score of girls.
The average of 5 consecutive numbers is 15. The largest of these numbers is:
Average age of A, B and C is 25 years. If the average age of A and B be 27 years and that of B and C be 24 years, then find the age of B.
Atul has twice as much money as Abhishek. Abhishek has 20% more money than Rohit. If the average money with them is Rs 115, then Rohit has-
The bowling average of a bowler is 15.2. He took 4 wickets for 40 runs in his last match, then his average improved by 0.2. Find the number of wickets taken by him before the last match.
How many kg of sugar worth Rs 36 per kg should be added to 6 kg of sugar worth Rs 43 per kg such that by selling the mixture at Rs 46 per kg, there is a gain of 15%.
The ratio of milk and water in a vessel is 4 : 1. How much water should be added to the mixture so that the ratio becomes 2 : 1? Initial quantity of mixture is 60 L.
The ratio of milk and water in a vessel containing 48 L mixture is 5 : 1. How much mixture should be replaced by water so that the ratio of milk and water becomes 5 : 3?
A milkman has 30 litres of milk. If he mixes 10 L of water to it and sells the mixture at the cost price. Find the percentage profit made by the milkman if the cost price of milk is ₹ 35/L.
Two bottles contain spirit and water respectively in the ratio 2 : 5 and 2 : 3. Find the ratio in which they are to be mixed to get a new mixture in which the ratio of spirit to water is 1 : 2.
