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3 years ago

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25% of a number is 80. What is 60% of the number.

2 answers:

fiasKO [112]3 years ago

6 0

You know that 25% of a number is 80.

That means that 1/4 of a number is 80.

80 multiplied by 4 is 320, so 320 will be the "unknown number".

60% of 320 is saying the same thing as 60/100 multiplied by 320/1.

The answer of 60/100 * 320/1 is 19200/100.

Simplify, and you get 192.

The answer will be 192.

Hope this helped, and please mark brainliest! :)

timofeeve [1]3 years ago

5 0

If 25% is 80, 100% is 320. 60% of 320 is 192.

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<u>Step 1: Define Systems</u>

y = 4x - 18

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Substitute in <em>y</em> [2nd Equation]: 4x - 18 = -5x + 9
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