What is 80% as a simplified fraction

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

What is the range? can’t seem to find it out

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza