Brook drove a total of 180 miles in 3 hours. diederick drove a total of 160 miles in 4 hours. which explanation correctly describes a way to calculate how many miles per hour faster brook drove than diederick? a. step 1 multiply: 180 × 3 step 2 multiply: 160 × 4 step 3 add the two products. b. step 1 divide: 180 ÷ 3 step 2 divide: 160 ÷ 4 step 3 add the two quotients. c. step 1 divide: 180 ÷ 3 step 2 divide: 160 ÷ 4 step 3 subtract the two quotients. d. step 1 multiply: 180 × 3 step 2 multiply: 160 × 4 step 3 subtract the two products.