When Mr. Sen imports some raw materials he has to pay 7% import duty on the portion of the total value of the item in excess of TK. 1000. If the amount of import duty he paid was TK. 87.50 then what was the value of the raw material that he imported ?

what is the H. C.F of the numbers 36 , 54 and 90?

The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in s...

If 10 % of x is equal to 25% of y, and y =16 what is the value of x?

Every 3 minutes , 4 liters of water are poured into a 2,000 litre tank . After 2 hours, what percent of the ta...

A shopkeeper buys a box of candles for Tk. 18.00 If he wants to make a profit of 45% , how much should he rese...

The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at...