3 years ago

Suppose that 15 inches of wire costs 45 cents. At the same rate, how many inches of wire can be bought for 24 cents? Please help

1 answer:

6 0

$15\ inches\ cost\ 45\ cents\\
x\ inches\ cost\ 24\ cents\\\\
proportion:\\
15-45\\
x-24\\\\
cross\ multiplication\\\\
15*24=45x\\\\
360=45x\ \ \ | divide\ by\ 45\\\\
x=8\\\\
8\ inches\ of \ wire\ cost\ 24\ cents.$

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