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lora16 [44]
2 years ago
11

Cary collected a total of 400 pennies and dimes. 80% of them

Mathematics
2 answers:
Aleksandr [31]2 years ago
4 0

Answer:

240

Step-by-step explanation:

kifflom [539]2 years ago
3 0

Answer:

Number of pennies Cary donated = 240

Step-by-step explanation:

According to the question,

Pennies + Dimes = 800

number of pennies = 80% of 400 = \frac{80}{100} \times 400 = 320

number of dimes = 400 - 32 = 80

then Cary donated some pennies.

Let us assume that Cary donated = x pennies

After donating some pennies, 50% of the remaining coins were pennies.

which can be written as;

320 - x = \frac{50}{100} \times(400-x)

320 - x = 0.5 \times (400-x)

x = 240

So, number of pennies donated = 240

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1.5r+15=2.25r
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