Questions and Answers Type: | MCQ (Multiple Choice Questions). |

Main Topic: | Quantitative Aptitude. |

Quantitative Aptitude Sub-topic: | Percentage Aptitude Questions and Answers. |

Number of Questions: | 10 Questions with Solutions. |

- A company pays rent of Rs 35,000 per month for an office space to its owner. If the company pays an annual rent at the beginning of the year the owner gives a discount of 10% on the total annual rent then find the annual rent the company pays after the discount?
- Rs 342,000
- Rs 367,000
- Rs 371,000
- Rs 378,000

Answer: (d) Rs 378,000

Solution: The total annual rent.$$ = 12 \times 35,000 $$ $$ = Rs \ 420,000 $$ 10% discount on the annual rent.$$ = \left[\frac{10}{100} \times 420,000\right] $$ $$ = Rs \ 42,000 $$ Hence annual rent after 10% discount. $$ = 420,000 - 42,000 $$ $$ = Rs \ 378,000 $$

Solution: The total annual rent.$$ = 12 \times 35,000 $$ $$ = Rs \ 420,000 $$ 10% discount on the annual rent.$$ = \left[\frac{10}{100} \times 420,000\right] $$ $$ = Rs \ 42,000 $$ Hence annual rent after 10% discount. $$ = 420,000 - 42,000 $$ $$ = Rs \ 378,000 $$

- 0.01 is what percent of 1.0?
- 10 %
- 5 %
- 1 %
- 0.1 %

Answer: (c) 1 %

Solution: Required percentage.$$ = \frac{0.01}{1.0} \times 100 $$ $$ = 1 \ \% $$

Solution: Required percentage.$$ = \frac{0.01}{1.0} \times 100 $$ $$ = 1 \ \% $$

- 120% of 65 + 65% of 120?
- 145
- 156
- 167
- 172

Answer: (b) 156

Solution: $$ = \left[\frac{120}{100} \times 65\right] + \left[\frac{65}{100} \times 120\right] $$ $$ = 78 + 78 $$ $$ = 156 $$

Solution: $$ = \left[\frac{120}{100} \times 65\right] + \left[\frac{65}{100} \times 120\right] $$ $$ = 78 + 78 $$ $$ = 156 $$

- The price for a pair of socks is $50 but the price for a 5-pairs pack of socks is $220. The 5-pairs pack of socks is what percent cheaper per pairs than the 5-pairs of socks purchased separately?
- 8 %
- 10 %
- 12 %
- 14 %

Answer: (c) 12 %

Solution: The price of a 5-pairs pack of socks = $ 220

The price of 5-pairs of socks if purchased separately.$$ = 5 \times 50 $$ $$ = $ 250 $$ The difference in price $$ = 250 - 220 $$ $$ = $ 30 $$ Required percentage $$ = \frac{30}{250} \times 100 $$ $$ = 12 \ \% $$ Hence 5-pair pack of socks is 12 % cheaper per pair than the 5-pairs of socks purchased separately.

Solution: The price of a 5-pairs pack of socks = $ 220

The price of 5-pairs of socks if purchased separately.$$ = 5 \times 50 $$ $$ = $ 250 $$ The difference in price $$ = 250 - 220 $$ $$ = $ 30 $$ Required percentage $$ = \frac{30}{250} \times 100 $$ $$ = 12 \ \% $$ Hence 5-pair pack of socks is 12 % cheaper per pair than the 5-pairs of socks purchased separately.

- An interval of 4 hours 20 minutes is wrongly estimated as 4 hours 25.5 minutes. The error percentage is?
- 2.12 %
- 2.84 %
- 3.22 %
- 3.45 %

Answer: (a) 2.12 %

Solution: The correct time of interval = 4 hours 20 minutes $$ = 4 \times 60 + 20 $$ $$ = 260 \ minutes $$ Wrongly estimated time of interval = 4 hours 25.5 minutes $$ = 4 \times 60 + 25.5 $$ $$ = 265.5 \ minutes $$ Error in time $$ = 265.5 - 260 $$ $$ = 5.5 \ minutes $$ Hence error percentage $$ = \frac{5.5}{260} \times 100 $$ $$ = \frac{27.5}{13} \ \% $$ $$ = 2.12 \ \% $$

Solution: The correct time of interval = 4 hours 20 minutes $$ = 4 \times 60 + 20 $$ $$ = 260 \ minutes $$ Wrongly estimated time of interval = 4 hours 25.5 minutes $$ = 4 \times 60 + 25.5 $$ $$ = 265.5 \ minutes $$ Error in time $$ = 265.5 - 260 $$ $$ = 5.5 \ minutes $$ Hence error percentage $$ = \frac{5.5}{260} \times 100 $$ $$ = \frac{27.5}{13} \ \% $$ $$ = 2.12 \ \% $$

Lec 1: Introduction to Percentage
Exercise-1
Lec 2: Percentage Case-1
Exercise-2
Lec 2: Percentage Case-2
Exercise-3
Lec 2: Percentage Case-3 & Case-4
Exercise-4
Exercise-5
Exercise-6
Exercise-7
Exercise-8
Exercise-9
Exercise-10