Successive discounts of 20% and 15% are equal to a single discount of ---

If x+2y=2x+y, then x-y equal to ---

If the area of a square increases by 69%, then the side of the square increases by ---

If x/y=4 and y is not 0, what percentage (to the nearest percent) of x is 2x-y?

A borrower pays 18% interest per year on the first Tk. 600 he borrows and 17% per year on the part of the loan...

A cycle costs Tk. 2,500 when it is brand new. At the end of each year it is worth 4/5 th of what it was in the...

A lent Tk. 4000 to two persons for one year. Some amount was lent at 5% and the rest at 4%. He got Tk. 180 as...