SarkariPYQ

SSC CGL 2018 PYQ — Question 54

SSC CGL Tier II Quant - 09/03/2018 • Quantitative Aptitude • Q54

Back to paper

Instructions

The table given below shows the ratio of cars and Bikes manufactured by 5 different companies. The table also shows the ratio of three different types of cars Cl, C2 and C3 and three different types of bikes al, B2 and B3 manufactured by these 5 different companies. Total numbers of car and bikes together manufactured by D, E, F, G and H are 300000, 280000, 320000, 400000 and 480000 respectively.

Company Car : Bike C1 : C2 : C3 B1 : B2 : B3
D 1 : 02 2 : 03 : 05 2 : 02 : 01
E 3 : 01 1 : 01 : 01 2 : 03 : 02
F 1 : 01 2 : 01 : 01 1 : 01 : 02

G

 3 : 01 2 : 03 : 01 1 : 02 : 02
H 1 : 02 1 : 02 : 01 2 : 01 : 05

 

How many liters of water should be added to a 7.5 liter mixture of acid and water containing acid and water in the ratio of 1 : 2 such that the resultant mixture will have 20% acid in it?

Show answer & explanation

Correct answer: D

Explanation

The correct answer is Option 4 i.e. 5

Application

Amount of acid in 7.5 litres of mixture = 7.5 × 1/3 = 2.5 litres

And

Amount of water in 7.5 litres of mixture = 7.5 × 2/3 = 5 litres

Suppose ‘x’ litres of water should be added.

So,

2.5/(7.5 + x) = 0.2

2.5 = 1.5 + 0.2x

0.2x = 1

x = 5

Hence, 5 litres of water should be added.