On Saturday, Siena drove a total of 120 miles in 2 hours. On Sunday, she drove a total of 110 miles in 2 hours.




Which explanation correctly describes a way to calculate how much faster Siena drove per hour on Saturday?

A

Step 1 Divide: 120 ÷ 2.

Step 2 Divide: 110 ÷ 2

Step 3 Add the two quotients.

B

Step 1 Multiply: 120 × 2

Step 2 Multiply: 110 × 2

Step 3 Add the two products.

C

Step 1 Multiply: 120 × 2

Step 2 Multiply: 110 × 2

Step 3 Subtract the two products.

D

Step 1 Divide: 120 ÷ 2.

Step 2 Divide: 110 ÷ 2

Step 3 Subtract the two quotients.