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Bunuel
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Which of the following is 850 percent greater than 8*10^3 ? 09 May 2018, 01:35
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D
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63% (01:27) correct 37% (01:30) wrong based on 226 sessions

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Which of the following is 850 percent greater than \(8 * 10^3\) ?

A. \(8.5*10^3\)

B. \(6.4*10^4\)

C. \(6.8*10^4\)

D. \(7.6*10^4\)

E. \(1.6*10^5\)
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D
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Which of the following is 850 percent greater than 8*10^3 ? 09 May 2018, 03:07
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Solution



To find:
• What is the value which is 850% greater than 8*\(10^3\)

Approach and Working:
• If the number 8*\(10^3\) is increased by 850%,
    it will become = \(8*10^3 ( 1 + \frac{850}{100}) = 8*10^3 * 9.50 = 76 * 10^3 = 7.6 * 10^4\)
Hence, the correct answer is option D.

Answer: D

Note:
The multiplier 9.5 can easily be obtained with some observation. Check the following:
• When a number is increased by 100%, it becomes 2 times the original
• When a number is increased by 200%, it becomes 3 times the original
• When a number is increased by 550%, it becomes 6.5 times the original
• In a similar way, when a number is increased by 850%, it becomes 9.5 times the original
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Which of the following is 850 percent greater than 8*10^3 ? 14 Apr 2020, 03:36
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Why we add 1 in this question

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Which of the following is 850 percent greater than 8*10^3 ? 25 Sep 2020, 09:00
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RashidMajeed
Why we add 1 in this question

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Because if we don't, we are not adding the increase of 850%.

Think about it....

(100/100) is not an increase of 100%.

(200/100) is an increase of 100%.

In the same way, 950/100 is an increase of 850%.
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Which of the following is 850 percent greater than 8*10^3 ? 25 Sep 2020, 10:19
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Let's take a simple example to understand the language of this question.

If one says, find 20 percent greater than 100, then what will you write?

\(100 + \frac{20}{100} * 100 = 120\)

Now, back to the question. I don't like complicated expression :blushing:
So, let's take \(A = 8 * 10^3\)

Now, apply the above logic to find the answer.
850 percent greater than A
=> \(A + \frac{850}{100} *A\)
= \(\frac{950}{100} * A\)
= \(7.6 * 10^4\)

Let me know if you have further questions!
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