Question

Leonardo ate a 3/5 of cheeseburger and an entire salad for dinner. The salad contained 70 calories and the entire meal contained 1650 calories. Which equation can determine the value, c, the number of calories in the cheeseburger?

Answer 1

C = [5(1650 - 70)]/3

Explanation:

We write the equation: 1650 = 70 + 3C/5

Subtract 70 from both sides: 1650 - 70 = 3C/5

Multiply 5 on both sides: 5(1650 - 70) = 3C

Divide 3 on both sides : C = [5(1650 - 70)]/3

Answer 2

3/5 c + 70 = 1650.

Explanation:

If c is the number of calories in the cheeseburger, we can see that the entire number of calories for the meal is 3/5 c + 70 = 1650.

If we want to isolate c, we can subtract both sides by 70.

3/5 c = 1580