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3 years ago

10

H deposited $ 7,500 into a bank account. At the end of 3 years, the account had earned $900 in simple intrest. What rate of intr

est did the account earn per year
a. 2.78
b. 4%
c. 8.33%
d. 12%

Please show your work along w your answer :)

1 answer:

sertanlavr [38]3 years ago

4 0

B, 4% .

Find this by using the Interest Formula:

I = P X R X T
I = 7500 X .OO4 X 3
I = 900

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Answer:

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Answer:

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The answer would be 7/24

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Then you can cross multiply 3*3= 9 and 2*8=16

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Money of Phoebe - 3 times as much as Andy
Money of Andy - 2 times as much as Polly
Total money of Phoebe, - £270
Andy and Polly

*Solution

Let
B - Phoebe's money
A - Andy's money
L - Polly's money

1. The money of the Phoebe, Andy, and Polly, when added together would total £270. Thus,

B + A + L = £270 (EQUATION 1)

2. Phoebe has three times as much money as Andy and this is expressed as

B = 3A

3. Andy has twice as much money as Polly and this is expressed as

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4. This means that Phoebe has ____ as much money as Polly,

B = 3A
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This step allows us to eliminate the variables B and A in EQUATION 1 by expressing the equation in terms of Polly's money only.

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6L + 2L + L = £270
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So, Polly has £30.

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A = 2L
A = 2(£30)
A = £60

Andy has £60

B = 6L
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