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Bess [88]
3 years ago
9

A 15 lb. costs $19.50. At that same rate, how much would 12 1/2 lb. ham cost?

Mathematics
2 answers:
elena55 [62]3 years ago
7 0
Well determine the cost of one lb. To do that divide $19.50 by 15. This gives you $1.30 per lb. Multiply this by 12 1/2 to get your answer. This is $16.25
solmaris [256]3 years ago
4 0
There are 2 ways to do this....

(1) find the unit rate....19.50 / 15 = 1.30 per lb.
for 12 1/2 (or 12.5) lbs = 1.30 * 12.5 = 16.25 <===

(2) proportion...
15 / 19.50 = 12.5 / x...15 lbs to 19.50 = 12.5 lbs to x
 cross multiply
 (15)(x) = (19.5)(12.5)
  15x = 243.75
 x = 243.75 / 15
x = 16.25 <==

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