Troy bought 117 feet of white rope and 162 feet of yellow rope. he wanted to cut each rope into 9 equal pieces. explain how to calculate the difference in length between one piece of white rope and one piece of yellow rope.
a. step 1: multiply: 117 by 9. step 2: multiply: 162 by 9. step 3: add the two products.
b. step 1: multiply: 117 by 9. step 2: multiply: 162 by 9. step 3: subtract the two products.
c. step 1: divide: 117 by 9. step 2: divide: 162 by 9. step 3: subtract the two quotients.
d. step 1: divide: 117 by 9. step 2: divide: 162 by 9. step 3: add the two quotients.