Nora is selling muffins to raise $120 for an upcoming school trip. She has packaged the muffins in cases. Each case has three packs of muffins. Each pack has four muffins. If she prices each muffin at two dollars, how many cases of muffins must she sell to raise enough money for the trip?
If Nora prices each muffin at two dollars, she will sell 1 pack for 2 * 4 = <<1*2*4=8>>8 dollars
Since there are 3 packs to a case, the case will be sold for 3 * 8 = <<3*8=24>>24 dollars
It therefore means that she needs to sell 120/24 = <<120/24=5>>5 cases of muffins.
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Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
You are solving math problems. Here are some examples of how to solve the task:

Yella's computer usage last week was 91 hours. If she plans to use the computer 8 hours a day for this week, how much less ​is her computer usage for this week?Yella can use the computer 8 x 7 = <<8*7=56>>56 hours for this week.
Therefore, Yella's computer usage for this week is 91 - 56 = <<91-56=35>>35 hours lesser than her computer usage last week.
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Tonya spent $90.00 on art supplies.  4 canvases cost $40.00 and a mixed set of paints cost 1/2 that much. She also spent $15.00 on an easel, and the rest of the money on paintbrushes. How much money did she spend on paintbrushes?The canvases cost $40.00 and she spent half that amount on paint so she spent 40/2 = $<<40/2=20.00>>20.00 on paint
She spent $40.00 on canvases, $20.00 on paint and $15.00 on an easel so she spent 40+20+15 = $<<40+20+15=75.00>>75.00
She spent $90.00 total and her other purchases totaled $75.00 so she spent 90-75 = $<<90-75=15.00>>15.00 on paint brushes
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Now, solve this next question in the style of the above examples:

Nora is selling muffins to raise $120 for an upcoming school trip. She has packaged the muffins in cases. Each case has three packs of muffins. Each pack has four muffins. If she prices each muffin at two dollars, how many cases of muffins must she sell to raise enough money for the trip?

### Response:
If Nora prices each muffin at two dollars, she will sell 1 pack for 2 * 4 = <<1*2*4=8>>8 dollars
Since there are 3 packs to a case, the case will be sold for 3 * 8 = <<3*8=24>>24 dollars
It therefore means that she needs to sell 120/24 = <<120/24=5>>5 cases of muffins.
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