percentage Model Questions & Answers, Practice Test for ssc cgl tier 2

Answer: (c)

Let original consumption be 1 unit costing Rs. 100

New cost = Rs.125.

New consumption = $(1/125 × 100) = 4/5$ unit.

∴ $\text"Reduction in consumption"/\text"Originalconsumption"$

= $(1 - 4/5)/1 = 1/5$, i.e., 1 : 5.

Answer: (a)

$? = (383 × 739/100) ÷ 628$

≈ $({380 × 740}/100)$ ÷ 630 ≈ 2812 ÷ 630 ≈ 4.46 ≈ 4.50

Answer: (c)

? = $1782.55/179$ = 9.958 ≈ 10

Answer: (c)

No. of males = $11/18 × 7200$ = 4400

No. of males married = $40/100 × 4400$ = 1760

No. of females married = 1760

Required percentage = $1760/2800 × 100 = 62{6}/7 %$

Answer: (a)

Let the capacity of the tank be 100 litres.

Then, Initially : A type petrol = 100 litres.

After first operation :

A type petrol = $(100/2)$ = 50 litres;

B type petrol = 50 litres.

After second operation :

A type petrol = $(50/2 + 50) = 75$litres;

B type petrol = (50/2) = 25 litres

After third operation :

A type petrol = $(75/2)$ = 37.5 liters;

B type petrol = $(25/2 + 50)$ = 62.5 litres.

∴ Required percentage = 37.5%.