SOLUTION: Sears orders hammers and saws in a ratio of 4:7. If they ordered 12 hammers, how many saws were ordered?

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Question 957136: Sears orders hammers and saws in a ratio of 4:7. If they ordered 12 hammers, how many saws were ordered?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
let hammers be H and saws S
if hammers and saws ratio is 4%3A7, then we have
H%3AS=4%3A7
If they ordered 12 hammers, then
12%3AS=4%3A7. ...solve for S
4S=7%2A12
S=%287%2A12%29%2F4
S=%287%2Across%2812%293%29%2Fcross%284%291
S=7%2A3
S=21 => the number of saws that were ordered
check the ratio:
H%3AS=4%3A7
12%3A21=4%3A7
12%2F21=4%2F7
cross%2812%294%2Fcross%2821%297=4%2F7
4%2F7=4%2F7