If x=y=2z and xyz= 256, then x = ?

One-third of Ratan's investment in National Savings Certificate is equal to one-half of his investment in FDR....

A man bought some eggs of which 10% are rotten. He gives 80% of the remainder to his neighbors. Now he is left...

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Th...

The sum of the ages of the father and son is 80 years. If ten years ago the age of father was three times that...

The monthly incomes of two persons are in the ratio 4:5 and their monthly expenditures are in the ratio of 7:9...

Simple interest on a certain sum at the rate of 4.5% p.a. for 4 years and 6 years differs by BDT 216. The sum...