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Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are

  • 42,30
  • 42,31
  • 42,32
  • 42,33

Answer: Option D

Explanation:

Let their marks be (x+9) and x.
Then, x+9 = 56/100(x + 9 +x)
=> 25(x+9)
=> 14 (2x + 9)
=> 3x = 99
=> x = 33.
So, their marks are 42 and 33

Similar Questions :

1. 1/2 is what percent of 1/3

  • 150%
  • 200%
  • 250%
  • 300%

Answer: Option A

Explanation:

1/2/1/3 * 100 = 1/2 * 3/1 * 100 = 150 %

2. If 15% of 40 is greater than 25% of a number by 2, the number is

  • 14
  • 16
  • 18
  • 20

Answer: Option B

Explanation:

15/100 * 40 - 25/100 * x = 2 or x/4 = 4 so x = 16

3. Evaluate 28% of 450 + 45% of 280

  • 232
  • 242
  • 252
  • 262

Answer: Option C

Explanation:

= (28/100) * 450 + (45/100) * 280
= 126 + 126 = 252

4. Raman's salary was decreased by 50% and subsequently increased by 50%. How much percent does he loss.

  • 75
  • 65
  • 45
  • 25

Answer: Option D

Explanation:

Let the origianl salary = Rs. 100

It will be 150% of (50% of 100)
= (150/100) * (50/100) * 100 = 75

So New salary is 75, It means his loss is 25%

5. How many litres of pure acid are there in 8 litres of a 20% solution

  • 1.5
  • 1.6
  • 1.7
  • 1.8

Answer: Option B

Explanation:

Question of this type looks a bit typical, but it is too simple, as below...

It will be 8 * 20/100 = 1.6

Read more from - Percentage Questions Answers
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