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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.

User Kevlened
by
8.6k points

1 Answer

5 votes
Given:
Saturday : 120 miles in 2 hours
Sunday : 110 miles in 2 hours

120 / 2 = 60 mph
110 / 2 = 55 mph

60 mph - 55 mph = 5 mph faster on Saturday.

D.
Step 1 Divide: 120 ÷ 2.
Step 2 Divide: 110 ÷ 2
Step 3 Subtract the two quotients.

User Oana Andone
by
7.7k points
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