Question

the number of calories in a piece of pizza is 20 less than 3 time the number in a bag of chips the pizza and chips together have 620 calories how many calories are in each

Answer 1

pizza is 460, chips are 160

Explanation:

x is pizza, y is chips

x+y=620

x=3y-20

sub: 4y-20=620

4y=640

y=160

x=460