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The average of a number and 20% of the number is 660. What is the numb
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14 Oct 2021, 05:20
14 Oct 2021, 05:20
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25% (01:48) wrong based on 12 sessions
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The average of a number and 20% of the number is 660. What is the numb
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14 Oct 2021, 05:58
14 Oct 2021, 05:58
1
Carcass wrote:
Let \(x\) = the number
So, \(0.2x\) = 20% of the number
If the average of the two numbers is \(660\), we can write: \(\frac{x + 0.2x}{2} = 660\)
Multiply both sides of the equation by \(2\) to get: \(x + 0.2x = 1320\)
Simplify: \(1.2x = 1320\)
Solve: \(x = \frac{1320}{1.2} = 1,100\)
Answer: \(1,100\)
gmatclubot
The average of a number and 20% of the number is 660. What is the numb [#permalink]
14 Oct 2021, 05:58
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