Question

Does anyone know the answer to 7-8

Answer 1

What the person said above me

Answer 2

7 is $\frac{9}{10}$ miles; the question includes the words "in all", which shows that the two fractions should be added together. To add fractions with the same denominator, you must simply add the numerators and keep the denominator unchanged.

8 is $\frac{3}{4}$ yards of ribbon; this one also requires you to add the fractions-- the numerators should be added, but the denominator stays the same because the two fractions share the same denominator.