model 1 simple percentage questions Section-Wise Topic Notes With Detailed Explanation And Example Questions

MOST IMPORTANT quantitative aptitude - 11 EXERCISES

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The following question based on percentage topic of quantitative aptitude

Questions : In a college, 40% of the students were allotted group A, 75% of the remaining were given group B and the remaining 12 students were given group C. Then the number of students who applied for the group is

(a) 80

(b) 92

(c) 100

(d) 60

The correct answers to the above question in:

Answer: (a)

Group A = 40%

Group B = ${60 × 75}/100$ = 45%

Group C = 15%

If the total number of students be x,

then ${x × 15}/100$ = 12

x = ${12 × 100}/15$= 80

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Read more simple percentage Based Quantitative Aptitude Questions and Answers

Question : 1

65g is what per cent of 2 kg ?

a) $15/8$

b) $13/8$

c) $13/4$

d) $65/2$

Answer: (c)

Required percentage = $65/2000 × 100 = 13/4$

[Since 2kg = 2000g]

Question : 2

Given A is 50% larger than C and B is 25% larger than C, then A is what percent larger than B ?

a) 75%

b) 20%

c) 25%

d) 50%

Answer: (b)

Let C = 100 Then, A = 150; B = 125

Required percentage = ${150 – 125}/125$ × 100 = 20%

Question : 3

0.01 is what per cent of 0.1 ?

a) 100

b) $1/100$

c) 10

d) $1/10$

Answer: (c)

Let x % × 0.1 = 0.01

$x/100 × 0.1= 0.01$

x = ${0.01 ×100 }/0.1$ = 10

Question : 4

If x is 80% of y, what percent of y is x ?

a) 100%

b) 125%

c) 75%

d) 80%

Answer: (b)

According to question,

y = ${100 × 100}/80$ of x

y = 125% of x

Question : 5

A team played 40 games in a season and won in 24 of them. What percent of games played did the team win?

a) 60%

b) 35%

c) 70%

d) 40%

Answer: (a)

Required percentage = $24/40 × 100$ = 60%

Question : 6

A student multiplied a number by $3/5$ instead of $5/3$ . What is the percentage error in the calculation ?

a) 54%

b) 64%

c) 44%

d) 34%

Answer: (b)

Let x be the multiplicand.

Error = $5/3x - 3/5x$

= $\text"25x – 9x"/15 =\text"16x"/15$

Percentage error = ${\text"16x"/15}/{5/3x}$ × 100

=$\text"16x"/15×3/\text"5x"$ ×100=64%

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