Question

Find the calories in 16 potato chips if 10 potato chips contain 115 calories.

Answer 1

Well in one potato chip there is 11.5 calories.
So 11.5*15=?

Answer 2

I would use a ratio:
\[ \frac{115 \text{ cals}}{10 \text{ chips }} = \frac{x \text{ cals}}{16 \text{ chips }} \]

Answer 3

to solve, multiply both sides by 16 chips:
\[ \frac{115 \text{ cals}}{10 \cancel{\text{ chips} }} \cdot 16 \cancel{\text{ chips} }= \frac{x \text{ cals}}{\cancel{16 \text{ chips }}} \cdot \cancel{16 \text{ chips }}\]

Answer 4

you get
\[ \frac{ 115 \cdot 16 }{10} \text{ cals } = x \]

Answer 5

I like proportions....
However, this is an indirect proportion.....
10/16 = 115/x
cross multiply
(10)(x) = (115)(16)
10x = 1840
x = 184
Lets check it :
10/16 = 115/184
cross multiply
(10)(184) = (16)(115)
1840 = 1840 (correct)
ANSWER: 16 potato chips contain 184 calories

Answer 6

Thank you! :)

Answer 7

thats what we are here for :)