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leva [86]
2 years ago
14

David's phone bill each month is $30. He is also charged $0.10 per GB of data he uses. If his phone bill in July was $42, how ma

ny GB of data did he use in July?
Variable:

Equation:

Solution:
Mathematics
2 answers:
Aleonysh [2.5K]2 years ago
7 0

Answer:

120

Step-by-step explanation:

Okay so the equation would be like this
30 + 0.10g = P

g = GB of data used

P = Total Price

Let's work this out now!

So. If his total bill was $42 lets subtract the 30 that comes out every month automatically, now we are just left with 12, if each GB costs 0.10 then all you would do to find out how many GB he used is do 12/0.10 (which is really just 12*10) which will get you 120

Meaning that he used 120 GB

(That's a lot!)

Shkiper50 [21]2 years ago
5 0
I took test it was correct thank you so much
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Let's decompose this into:

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Then we have the multiplication:

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Let's distribute the multiplication:

300*80 + 300*9 + 300*0.1 + 25*80 + 25*9 + 25*0.1

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Then the list of six multiplications involved in solving this problem are:

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Now we add all of those and get:

325*89.1 = 24,400 + 2,700 + 30 + 2,000 +  225 + 2.5 = 28,957.5

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