9/12 times 5 is 45/ 60 which is equal to 3/4 of a mile. I’m afraid I didn’t understand the question but I hope this helps.
7 is a prime number, 72 is not a prime number.
Hope this helped!:)
Pretty sure it’s infinitely many solutions
Two can be the same and for the most that would be two $5 bills and the third would be a $1 bill so the most he could give her is $11