Mathematics, 16.10.2019 15:00, thhfvbjurddee

Robert drove at an average speed of 60 miles per hour for 6 hours. nancy drove for 7 hours at an average speed of 56 miles per hour. which method shows a way to calculate the difference in the distances they drove?
a. step 1 divide: 60 ÷ 6. step 2 divide: 56 ÷ 7. step 3 subtract the two quotients.
b. step 1 divide: 60 ÷ 6. step 2 divide: 56 ÷ 7. step 3 add the two quotients.
c. step 1 multiply: 60 × 6. step 2 multiply: 56 × 7. step 3 add the two products.
d. step 1 multiply: 60 × 6. step 2 multiply: 56 × 7. step 3 subtract the two products.

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Robert drove at an average speed of 60 miles per hour for 6 hours. nancy drove for 7 hours at an ave...