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.