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zloy xaker [14]
2 years ago
9

Dan earns $42.75 per month working as a tutor. He worked as a tutor for 4 months. He also earned $52.45 walking dogs in the neig

hborhood. He spent $18.50 of his total earning to buy a movie ticket and candy. Dan put of the remaining money in his savings account.
Dan used the following steps to find the total money he put in his savings account:

Step 1: [($42.75 ⋅ 4) + $52.45 − $18.50] ⋅

Step 2: [$171 + $52.45 − $18.50] ⋅

Step 3: 241.95 ⋅

Step 4: $80.65

In which step did Dan first make an error? Use words to explain how Dan can correct his error
Mathematics
1 answer:
In-s [12.5K]2 years ago
5 0
They made an error in step 2 which showed up in step 3. When adding those numbers, Dan should have gotten $223.45 and not $241.95
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grandymaker [24]

Answer:

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I = prt

I = (2,400) (0.04) (2.5)  

note: I changed 4% to a decimal and 30 months to 2.5 years

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I = 240   <-- The interest

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The simple interest accumulated on a principal of $ 2,400.00  at a rate of 4% per year for 2.5 years (30 months) is $240.00.

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-6-5[-4-(6+12)]+(-5)
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Answer:

99

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-6-5[-4-(6+12)]+(-5)

Following PEMDAS

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