Question

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.

Answer 1

C. because step 1 you have to divide 180 and 3. Step 2 you have to divide 160 and 4. Step 3 you have to subtract the two quotients. Hope this helps

Answer 2

I am thinking C
Why? Because for every 3 hours Brook drove 180 mile so divide it by 3 and you get how many miles she drove for 1 hour. Same goes for Diederick for every 4 hours he drove 160, so divide 160 by 4 to get miles per 1 hour. You must subtract to find the difference between the two, subtracting is a great way to compare numeric values. Hope this helped!