Answer:
36 minutes
Step-by-step explanation:
The key is to get the same amount of time for each.
9 * 12 = 108
At 12 minutes per job,
in 108 minutes Alyssa could do
108/12 = 9 jobs
At 9 minutes per job,
Together in 108 minutes they could do
108/9 = 12 jobs
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In 108 minutes Mirada does
12 - 9 = 3 jobs
108/3 = 36 minutes per job
Answer:
{x,y}={5,-3}
Step-by-step explanation:
y more than 4 means you are adding y to 4 so the equation would be
4+y = -36
Here is ur answer hope it helps:)
12 customers = 9 mintues
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Divide by 3 through
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12 ÷ 3 customers = 9 ÷ 3 minutes
4 customers = 3 minutes
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Answer: She can ring up 4 customers in 3 minutes
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