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

Answer: (b)

Let the total number of applicants be x.

Number of eligible candidates = 95% of x.

Eligible candidates of other categories = 15% of (95% of x)

= $(15/100 × 95/100) × x = 57/100x$

$57/100x = 4275$

$x = ({4275 × 400}/57)$ = 30000

Answer: (c)

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: (a)

Required number = 3342 × $150/100$ = 5013

Answer: (d)

Net effect on sale = - $\text"(common % change)"^2/100$

= $- (15)^2/100 = 2.25%$ decrease

Answer: (e)

$\text"x + 20% of x"/\text"y + 25% of y" = 3/5$

${120x}/100 ÷ {{125y}/100} = 3/5$

${120x}/100 × 100/{125y} = 3/5$

$x/y = 3/5 × 125/120 = 5/8$