Andrew collects stamps. He collected a total of 125 stamps. If 68% of the stamps he collected were foreign, how many other stamps did he collect?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6