Question

Help! Donovan runs about 2.5 miles each day. In 3 weeks, about how many miles does he run?

Answer 1

do 2.5 times 21 and it is 43 miles in 3 weeks

Answer 2

so 2.5 miles each day
3 weeks is 21 day
1 day 2.5 2.5*21=552.5
so the answer is 552.5