Consider that w+x=-4, x+y=25 and y+w=15. Then the average of w,x,y is -

How long will it take for a amont of taka 450 to yeild take 81 as interest at 4.5% per annum of simple interes...

Today is Ratuls 12th birthday and his fathers 40th birthday. How many years from today will Ratul's father be...

A groccer buy some eggs at tk. 3 each. He find 12 of them are broken, but he sells other at tk.4 each and make...

Waht is the original price of a t-shirt, if the sale price after 15% discount is 272?

The present age of john and marry are in the ratio of 6:4. Five years ago their ages were ratio of 5:3. How ol...

Tk.5000 is deposited in a savings account which pays 7% annual interest compounded semi-anually. To the neares...