The point Q(a, b ) is first reflected in y-axis to Q1 and Q1 is reflected in x-axis to (-5,3 ). The co-ordinates of point Q are 

Kirti invested a sum of money at a certain rate of simple interest per annum for 3 years in "Bachat scheme". Had she invested the same sum in "Shiksha scheme" for 3 years which has a 2% higher simple interest rate per annum, the investment would have fetched ₹540 more. How much did Kirti invest?

A DVD player was purchased for Rs 4860. At what price should it be sold so that 25% profit is earned?

If the 5 digit number 538xy is divisible by 3, 7 and 11, then the value of (x² +y²)  is:

if the monthly salary of a fan employee is increased by $$ 2{2\over 3}\% $$, he gets 72 rupees more. His Monthly salary (in rupees) is:

A certain amount of money is lent out at compound interest at the rate of 20% per annum for two years, compounded annually. It would give Rs. 482 more if the amount is compounded half yearly. Find the principal.

An amount of money appreciates to Rs. 7,000 after 4 years and to Rs. 10,000 after 8 years at a certain compound interest compounded annually. The initial amount of money was