Students sold 80% of the books donated to the used book sale. They sold 48 book in all. How many books were donated to the used book sale. Use a table in your expression.
Since 80% of 48 is 38.4, the total amount (100%) would have to be 46 because if you add the other 20% which is 7.68 that equals 46.08, round down and you get 46
