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.