For the following questions answer them individually
What is the compound interest on a sum of ₹8000 at the rate of 5% per annum compounded quarterly for 3 months?
A bag contains ₹5 and ₹10 coins for a total of 40 coins and a total amount of ₹310. What is the difference between the amount made up of all ₹10 coins and the amount made up of all ₹5 coins?
The cost price of a car is five times the loss incurred on selling this car. What is the loss percentage?
The simple interest on a sum at 3% p.a in 3 years is ₹315. What is the compound interest on the same sum at 4% p.a in 2 years, interest compounded yearly?
In an office with 40 officers, the average salaries of class-A, class-B and class-C officers are ₹600, ₹750 and ₹1,000 a day, respectively. The numbers of class-A, class-B, and class-C officers in the office are in the ratio 5 : 4 : 1, respectively. Find the monthly average salary (in ₹) of an officer, all 40 of them taken together. [Assume the number of days in a month to be 30.]
The volume of a cuboid is 3300 cm$$^3$$. The sum of the length and the breadth of the cuboid is 3 7 cm. If the difference between the length and the breadth of the cu boid is 13 cm, then what is the height of the cuboid?
Find the height of a right pyramid if its base is a square of side 80 cm and the volume of the pyramid is 16000 cm$$^3$$.
A and B currently have an age ratio of 7 : 3. After 7 years this age ratio will become 2 : 1. After how many years from now will the age ratio between the ages of A and B become 3 : 2?
P, Q and R can complete a task together in 15 days. P and R can complete the task together in 40 days. In how many days can Q complete the task alone?