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oksian1 [2.3K]
2 years ago
14

Jimmy needs $100 for his trip he has $40 saved now and makes $2 each day for helping his brother with homework How many days unt

il he has enough money
Mathematics
1 answer:
Genrish500 [490]2 years ago
4 0

Answer:

OKay so this question is actually <em>UNCLEAR</em>.

Do they mean how many <em>more</em> days <em>until</em> they have enough money, or how many days in <em>GENERAL</em> until they have enough money (excluding the money Jimmy already saved, $40)?

Assuming the former, <u>the answer should be 30 days. </u>

Step-by-step explanation:

Since Jimmy has $40 already currently, he'd need to make 60 more dollars, right? So since our boy Jimmy makes 2 dollars a day, multiply that by 30 and that'd equal 60. So the answer should be 30 more days until Jimmy has enough money for his trip.

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Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Amount of isopropyl alcohol made by the chemistry class = 300 of 30%

Amount of 12% isopropyl alcohol mixed by the chemistry class = x

Amount of 42% isopropyl alcohol mixed by the chemistry class = 300 - x

2. How much of each did they use?

Let's write our equation to solve for x, this way:

30% = 0.3, 12% = 0.12, 42% = 0.42

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<u>Let's prove x = 120 is correct</u>

0.12x + 0.42 (300 - x) = 0.3 * 300

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