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lesya [120]
3 years ago
11

Jarvis is planning a birthday party for his little brother. He buys 10 toy cars for $3 each and 10 chocolates for $1 each to be

given as party favors. The store gives him a discount of $2.
What percent discount did the store give Jarvis?
Mathematics
1 answer:
Flauer [41]3 years ago
8 0
They gave him a 40% discount.
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If x = # of quarters, then, the # of dimes will be equal to 2x. The total value (z) would be equal to:

z = 0.25x + 0.10(2x)

Then, since you switch the quarters and the dimes, and you have a new total, the resulting equation will be:

1.2 + z  = 0.25(2x) + 0.10(x)

Plug in the values you know:

1.2 + (0.25x + 0.10(2x)) = 0.25(2x) + 0.10(x)

Solve for x:

1.2 + (0.25x + 0.20x) = 0.50x + 0.10x
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This means that there are 8 Quarters in her bag right now. So, the amount of dimes is just 2x which is 16. So your answer will be:

She has 8 Quarters and 16 Dimes in her bag right now. Or, $3.60.

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4 0
3 years ago
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Slav-nsk [51]
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PLS HELP ASAP I REALLY NEED HELP!!!!
maks197457 [2]

Answer:

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Leokris [45]

Answer:

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Step-by-step explanation:

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