Question

Nendell saw at a diner if he bought one of each item and spent $7.50, how much did the drink cost

Answer 1

Ok so add .05 and .1 to get .15 so you have 7.10 left so divide by 5 because 3x is 3 and 2 more x's is 5x so divide 5 by 7.10 to get 1.42 so x is 1.42 so the drink is $1.52. that is the answer but just in case fries $1.42 and burger $4.31

Answer 2

All together: 3x + 0.05 + x + x + 0.10 = 7.50 

 5x + 0.15 = 7.50 

5x = 7.35 

 x = 1.47 

1.47 +0.10=1.57

so, the drink costs 1.57