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lesantik [10]
3 years ago
14

Tom bought 2.5 cakes for class for the class picnic. 25 students will share the cake equally. what fractional part of a cake sho

uld each student receive so that no cake is left over?
Mathematics
1 answer:
kvv77 [185]3 years ago
7 0
THE ANSWER IS 27.5,BECAUSE WHEN I ADDED IT 25+2.5 I GOT 27.5.THIS IS HOW I GOT MY ANSWER.
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Answer:

He made $25,000 in total. A 10% is 1 tenth of the total. so multiply 2500 by 10.

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
The chemistry class was making 300 gallons of 30% isopropyl alcohol. They mixed 12% with 42%. How much of each did they use?
alexgriva [62]

Answer:

<u>The chemistry class mixed 120 gallons of 12% isopropyl alcohol and 180 gallons of 42% isopropyl alcohol.</u>

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

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

0.12x + 126 - 0.42x = 90

-0.3x = 90 - 126

-0.3x = -36

x = -36/-0.3

<u>x = 120 ⇒ 300 - x = 180</u>

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

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

0.12 * 120 + 0.42 (300 - 120) = 0.3 * 300

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<u>We proved x = 120 is correct</u>

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Answer:

Step-by-step explanation:

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