When a certain number is divided by 7 ,the remainder is 0. if the remainder is not 0 when the number is not 0 when the number is divided by 14 , then the remainder must be -

A mixture of 20 kg of sprit and water contains 10% water. How much water must she added to mixture to raise th...

X and Y start a business by investing a certain amount in the ratio 9: 16 . Both of them invest for an equal p...

The average attendance of a college for the first three days of a week is 325 and first four days is 320. How...

TK. 355 has been divided among A, B,C in such a way that a had TK. 20 more than B and C had Tk. 15 more than B...

If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is...

By what percentage above the cost price ,a fan should be sold if a shopkeeper wants to make a profit of Tk. 50...