Quantitative Aptitude - Arithmetic Ability Questions

Find the missing number?

Two pipes X and Y can individually fill a tank in 48 and 72 min respectively. If they are opened simultaneously, how long will it take for the tank to fill? 

A shop keeper purchased 15 kg of sugar and 20 kg of wheat at Rs. 50 and Rs. 75 per kg respectively. On selling them, he gained 10% on sugar and 20% on wheat. What was the total sale vale?

The interest earned on Rs. 3675 at the rate of 4% simple interest per annum for 2 years will be

Present age of R and S are in the ratio of 3 : 2 respectively. If the present age of H is 117 years and R’s present age is 4/13 of H’s present age, then after how many years the ages of R and S would be in the ratio of 15 : 11?

If a cone of radius 10.5 cm and height 12 cm is melted and constructed into a cylinder of the same radius, what will be the height of this cylinder?

Mohan starts to calculate sum of all odd natural number less than 83. What result does he get?

What is the largest 4 digit number that is exactly divisible by 93?