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March 3, 2015

March 3, 2015

Posted by **Anonymous** on Sunday, July 10, 2011 at 11:40pm.

**I know the answer is 8 but i dont know how to do it and create the equation to get to that answer. **

- Math -
**Reiny**, Sunday, July 10, 2011 at 11:54pmLet the number of A's be x

let the number of B's be y

for the production: 3x + 5y = 24

for the finishing : 6x + 2y = 24

double the first and subtract the 2nd

8y = 24

y = 3

sub back into the 1st:

3x + 15 = 24

x = 3

So they must make 3 A's and 3 B's

check: to product A takes 9 hours, to produce B takes 15 hours for a total of 24 in production.

to finish A takes 18 hrs, and it takes 6 hrs for B for a total of 24 hrs to finish.

my answer checks out.

I have not clue how or from where you got 8.

8 what? it makes no sense.

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