aptitude percentage mcq pdf Model Questions & Answers, Practice Test for ibps rrb so officer sclae 2 3 single exam 2024

Answer: (b)

$(\text"21.5% of 999")^{1/3} + (\text"43% of 601")^{1/2}$ = ?

$(\tex1000 × 21.5%)^{1/3} + (600 × 43%)^{1/2}$ = ?

$(215)^{1/3} + (258)^{1/2}$ = ?

$(216)^{1/3} + (256)^{1/2}$ = ?

$(6)^{3 ×1/3} + (16)^{2 × 1/2}$ = ?

6 + 16 = ? ⇒ ? = 22

Answer: (a)

$160 × 35/100 + {180 × ?}/100 = {310 × 50}/100$

or 160 × 35 + 180 × ? = 310 × 50

or 5600 + 180 × ? = 15500

or 180 × ? = 15500 – 5600 = 9900

or ? = $9900/180$ = 55

Answer: (a)

Let the number of voters on voter list is 'x'.

Valid votes = (0.9 x – 60)

Votes in support of 2nd candidate

= (0.9 x – 60) – 0.47 x

According to question

0.47 x – [(0.9x – 60) – 0.47x] = 308

0.94 x – 0.9 x + 60 = 308

0.04x = 248

x = 6200

So, option (b) is correct.

Answer: (a)

(58 – 39)% of number

Number × $56/100$ = 463.68

Number = ${463.68 × 100}/56 = 828$

25% of number = $828 × 25/100 = 207$

Answer: (d)

According to question.

So total amount = 100 + 100 + 120 = Rs. 320.