(a)
10 miles ーー> 65 minutes
1 mile ーー> 65 minutes ÷ 10 = 6.5 minutes
∴ Chau takes 6.5 minutes to run 1 mile.
(b)
16 pound ーー> $9
1 pound ーー> $9 ÷ 16 = $0.5625
∴ Diane paid $0.5625 per pound of rice.
1 and 1/8 miles
2 3/4 - 1 5/8
2 6/8 - 1 5/8= 1 1/8
Undefined lines can't be used in a proof
