Posted by **Jim** on Friday, May 24, 2013 at 3:05pm.

It takes a florist 3h 15min to make 3 small centerpieces and 3 large cebterpieces. It takes 6h 20min to make 4 small centerpieces abd 7 large centerpieces. How long does it take to make each small centerpiece and each large centerpiece? Write and solve a system of equations to find your answer.

- math -
**Steve**, Friday, May 24, 2013 at 3:49pm
if the times required are x and y for small and large, respectively,

3x+3y = 3 1/4 = 13/4

4x+7y = 6 1/3 = 19/3

clearing fractions, we have

12x+12y = 13

12x+21y = 19

subtract top from bottom to get

9y = 6

y = 2/3

so,

small takes 25 min

large takes 40 min

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