percentage Model Questions & Answers, Practice Test for ibps clerk prelims 2024

Answer: (b)

Let the original price be x and sale be of y units.

Then, the revenue collected initially = x × y

Now, new price = 0.8 x, new sale = 1.8 y

Then, new revenue collected = 1.44 xy

% increase in revenue

= ${0.44xy}/{xy} × 100$ = 44% increase

Answer: (d)

Let the third number be 100.

Then, the first and second numbers will be 20 and 50, respectively.

Required % = $20/50 × 100$ = 40%

Answer: (c)

$378/125 = 3 + 3/125$ = 302.4%

Let original salary be Rs. 100

And now going through option, we get (c) as answer.

Answer: (b)

R = S + 0.2S = 1.2S

$(\text"R - S"/\text"R") × 100 = (1 - \text"S"/\text"R") × 100$

= $(1 - 1/1.2) × 100$

= $100/6 = 50/3 = 16{2}/3$

Answer: (a)

Let price of 1 kg wheat be 100 and total consumption be 100 kg

Total cost at starting = 100 × 100 = 10000

Total new cost = 10000

New price of wheat/kg = $100 × 125/100 = 125$

New consumption = $10000/125$ = 80 kg decrease in consumption

= ${100 - 80}/100 × 100$ = 20%