Question

Which shows a correct order to solve this story problem?

Isabel rode her bike 18.9 miles this week. She rode her bike 3 times farther last week than this week.

How far did Isabel ride her bike in the two weeks?

A.
Step 1 Multiply 18.9 × 3.
Step 2 Subtract 18.9 from the product.

B.
Step 1 Multiply 18.9 × 3.
Step 2 Add 18.9 to the product.

C.
Step 1 Divide 18.9 by 3.
Step 2 Add 18.9 to the quotient.

D.
Step 1 Divide 18.9 by 3.
Step 2 Subtract 18.9 from the quotient.

Answer 1

The answer is step B

Answer 2

A-Step 1 Multiply 18.9 × 3.
Step 3. Add 18.9 from the product. is the right answer. Why?
This week the distance travelled was 3x 18.9 father than last week, it means

18.9x3 + 18.9=75.6