Answer: 9 days
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Step-by-step explanation:
The mixed number 13 & 1/2 converts to the improper fraction 27/2
Use this formula to convert
a & b/c = (a*c+b)/c
So,
13 & 1/2 = (13*2+1)/2 = 27/2
Through similar steps, you should find that 1 & 1/2 = 3/2.
We have 27 half cups of cereal total and the children eat 3 half cups per day. Divide the two values and ignore the "half cups" units because they cancel when we divide.
27/3 = 9
The cereal will last 9 days.
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Another way to find the answer:
13 & 1/2 = 13 + 1/2 = 13 + 0.5 = 13.5
1 & 1/2 = 1 + 1/2 = 1 + 0.5 = 1.5
There are 13.5 cups of cereal total and they eat 1.5 cups of it per day
(13.5)/(1.5) = 9 days is how long the cereal will last