If 8 marbles cost 38 cents, then 12 marbles would cost_____.

pls. help..thank you

12/8 (or 3/2) times 38 cents

Got the answer...57 cents

Right!

To find the cost of 12 marbles, we can use a proportion to relate the number of marbles to their cost:

8 marbles cost 38 cents.

Let's set up the proportion:

8 marbles / 38 cents = 12 marbles / x cents.

To solve for x, we cross-multiply:

8 * x = 12 * 38.

8x = 456.

To isolate x, we divide both sides by 8:

x = 456 / 8.

Calculating this gives us:

x = 57.

Therefore, 12 marbles would cost 57 cents.