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.
Average of 6 numbers is 9. Average of the first two numbers is 10. If the average of the next three numbers is 8, find the last number.
Number of factors of 3003
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.
A mixture containing 5 litres of water and certain quantity of milk worth ₹ 30 per litre. If pure milk worths ₹ 40 per litre, how much milk is there in the mixture ?
A solution contains 15% diesel, 40% petrol and 45% kerosene. If 12.5% solution is replaced by kerosene and then of the obtained solution is replaced by diesel, find the percentage of petrol in the mixture now.
Find the highest power of 7 that divides 57! completely?
Find the sum of all co-primes of 36 ?
The weight of 4 members out of 12 are measured in a sequence. Average weight is calculated after measuring weight of each member. Each time average is calculated and it is 1 kg more than previous average. Find the difference of weight of first and last member.
Find the Sum of all the factors of 240
Ayush finds average of 20, 2 digits numbers. If the digits of one of the numbers is interchanged, average increases by 2.7. Find the difference between the digits of that 2 digits number.
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%.
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.
Find the sum of all the factors of 90.
The ratio of milk and water in 63 l mixture is 4 : 3. If 14 l milk and 13 l water is added to solution, find the ratio of milk and water now.
