RRB Assistant Loco Pilot and Technician Model Paper 1 with solutions

Question : 21 of 100

Marks: +1, -0

The ratio of the quantities of an acid and water in a mixture is 1 : 3. If 5 litres of acid is further added to the mixture, the new ratio becomes 1 : 2. The quantity of new mixture in litres is

Validate

Solution:

(d) Let the quantity of acid in original mixturebe x litre and that of water be 3x litre.
∴

{x+5}/{3x}=1/2

⇒ 2x + 10 = 3x ⇒ x = 10
∴ Quantity of new mixture
= 4x + 5 = 45 litres

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