Rita drove a total of 120 miles at 40 miles per hour. Tom drove a total of 100 miles at 50 miles per hour. Which explanation correctly describes a way to calculate the total number of hours Rita and Tom drove? A. Step 1 Divide: 120 ÷ 40 Step 2 Divide: 100 ÷ 50 Step 3 Add the two quotients. B. Step 1 Divide: 120 ÷ 40 Step 2 Divide: 100 ÷ 50 Step 3 Subtract the two quotients. C. Step 1 Add 120 + 40. Step 2 Add 100 + 50 Step 3 Divide the two sums by 2. D. Step 1 Subtract 120 – 40. Step 2 Subtract: 100 – 50. Step 3 Divide the two differences by 2.
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