Question

Chad takes in 21 calories per snack. In all,how many snacks does Chad have to eat to consume a total of 42 calories?

Answer 1

let y be amount of calories
let x be amount of snacks
the equation is y=21x
you know there's 42 calories so substitute that in: 42=21x
divide each side by 21: 2=x
The answer is: Chad needs to eat 2 snacks to consume 42 calories

Answer 2

Chad has to eat 2 snacks because 21+21=42