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SSC CGL 2021 PYQ — Question 80

SSC CGL - 24 Aug 2021 - Shift 2 • Reasoning • Q80

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In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
Smoking causes mutation in cells leading to cancer. Quitting smoking can help reverse the
(1)______ risk; and it can replenish cells that actually (2)______ those of a person who has
never smoked. The (3)______ you smoke the more mutations you have. The (4)______ damage to the cells lining the airway and lungs can (5)______ to cancers in the lungs, oesophagus, larynx and pharynx.

Out of three numbers, the ratio of the first and the second numbers is 3: 4, and the ratio of the second and the third numbers is 5: 6. If the difference between the first and the third number is 1125, find the average of the second and third numbers.

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Correct answer: A

Explanation

The correct answer is option 1 i.e. 2750.

Let the nos be a,b, and c.

The ratio of the first and the second numbers = a: b = 3x: 4x

The ratio of the second and the third numbers = b: c = 5x: 6x

Ratio of a:b:c = 15x:20x:24x

According to the question;

The difference between the first and the third number is 1125.

So, 24x- 15x = 1125

x = 125

So, the numbers are:

a = 15x =1875

b = 20x = 2500

c = 24x = 3000

Thus, the average of the second and third numbers = (2500 + 3000) ÷ 2= 2750