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Inga [223]
3 years ago
12

A cereal box says that it now contains 25% more cereal. If it originally had 12 ounces of cereal, how much does it have now?

Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
7 0

Answer:

<h2>21 ounces.</h2>

Step-by-step explanation:

<h2>This is percentage increase.</h2>

In order to find that, we simply do:

(100+25)% = 125%

100% = 12 ounces

125% = ?

12*125/100 = 9 ounces

Add it up to the original amount:

12+9 = 21 ounces

kogti [31]3 years ago
4 0

Answer:

15

Step-by-step explanation:

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Answer:

25 sheets of plywood will be needed

Step-by-step explanation:

Each sheet of plywood measures 4ft*8ft=32ft^{2}.

We have to cover the surface of the house, minus the surface of the hole of the stairs.

Surface _{to cover} = Surface _{house} -Surface _{hole}= (28ft*30ft)-(12ft*4ft)= 840ft^{2}-48ft^{2}=792ft^{2}

To know how many sheets will be needed, we divide the surface to be covered by the surface of each sheet

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As we can't buy 0,75 of a sheet, we round it up, i.e. we will need 25 sheets of plywood for subflooring.

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antiseptic1488 [7]

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