Question

Erick says he knows 9/10 is 1/10 less than 10/10 or 1 mile so, he is going to subtract 1 mile, then add 1/10 back. Can he use this method to solve the example problem? EXPLAIN.

Answer 1

No, Erick's method is not correct to solve the example problem. In his method, he subtracts 1 mile from 9/10 and then adds 1/10 back. However, this does not accurately represent the proportion of the distances. To solve the example problem correctly, you need to use proportions.

Step-by-step explanation:

No, Erick's method is not correct to solve the example problem. In his method, he subtracts 1 mile from 9/10 and then adds 1/10 back. However, this does not accurately represent the proportion of the distances. To solve the example problem correctly, you need to use proportions.

For example, if the scale is 1 inch = 5.5 miles, to find the number of inches needed to map 16.5 miles, you can set up a proportion: 1 inch / 5.5 miles = x inches / 16.5 miles. Then you can cross multiply and solve for x to find the number of inches.

Erick's method of subtracting and adding does not take into account the proportionality of the distances, and therefore it is not a valid method to solve the example problem.