How many 20 cent coins make up 5.80?

Answer 1

17

Answer 2

Assuming that 5.80 is an amount expressed in dollars or euros (the two major currencies that have cents as their smaller denomination):

There are 100 cents in each dollar/euro. Thus 5.80 of them is the same as 580 cents. (Move the decimal point 2 places to the right to convert.)

Both quantities are now expressed in cents. Divide 580 cents by 20 cents and you'll get an answer of 29 coins.