The answer to that question would be 410 miles per hour
If he has $75 and need $93 to make the purchase, he needs to find the difference between what he needs and what he has:
93 - 75 = 18
He needs to borrow $18 to make the purchase.
When dividing three real numbers the order can effect the answer.
Example:
8:4:2
1. 8:4:2=(8:4):2=2:2=1;
2. 8:4:2=8:(4:2)=8:2=4.
As you can see the results are different.
Answer: It is not true.