# 100+ Chain Rule Aptitude Questions and Answers Pdf - 1

Question: 1

A flagstaff 17.5 m high casts a shadow of length 40.5 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be

(A) 10 m

(B) 11.5 m

(C) 12.5 m

(D) 17.5 m

Ans: C

Let the height of the building be x metres.

Less lengthy shadow, Less is the height (Direct Proportion)

∴ 40.25 : 28.75 : : 17.5 : x

⇔ 40.25 × x = 28.75 × 17.5

⇔ x = $(28.75 × 17.5)/{40.25}$ ⇔ x = 12.5.

Question: 2

Some persons can do a piece of work in 12 days. Two times the number of such persons will do half of that work in

(A) 3 days

(B) 4 days

(C) 5 days

(D) 6 days

Ans: A

Let x men can do the work in 12 days and the required number of days be z.

More men, Less days (Indirect Proportion)

Less work, Less days (Direct Proportion)

Men | 2x : x | |

: : 12 : z | ||

Work | 1 : $1/2$ |

∴ (2x × 1 × z) = $(x × 1/2 × 12)$

⇔ 2xz = 6x ⇔ z = 3.

Question: 3

A mat weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat weavers in 8 days?

(A) 8

(B) 12

(C) 16

(D) 20

Ans: C

Let the required number of mats be x.

More weavers, More mats (Direct Proportion)

More days, More mats (Direct Proportion)

Weavers | 4 : 8 | |

: : 4 : x | ||

Days | 4 : 8 |

∴ 4 × 4 × x = 8 × 8 × 4 ⇔ x = $(8 × 8 × 4)/(4 × 4)$ = 16.

Question: 4

A garrison of 500 men had provisions for 27 days. After 3 days a reinforcement of 300 men arrived. For how many more days will the remaining food last now?

(A) 12

(B) 15

(C) 18

(D) 21

Ans: B

Let the remaining food last for x days.

500 men had provisions for (27 - 3) = 24 days.

(500 + 300) men had provisions for x days.

More men, Less days (Indirect Proportion)

∴ 800 : 500 : : 24 : x

⇔ (800 × x) = (500 × 24)

⇔ x = $({500 × 24}/800)$ = 15.

Question: 5

If a quarter kg of potato costs 60 paise, how many paise will 200 gm cost?

(A) 42 paise

(B) 44 paise

(C) 48 paise

(D) 54 paise

Ans: C

Let the required cost be x paise.

Less weight, Less cost (Direct Proportion)

∴ 250 : 200 : : 60 : x

⇔ 250 × x = (200 × 60)

⇔ x = $(200 × 60)/250$ ⇔ x = 48.

Maths Quantitative Aptitude Questions and Answers for Bank Exams Pdf More

1000+ GRE Non Verbal Reasoning Questions and Answers Pdf More

1000+ Non Verbal Reasoning Grouping of Images Questions Pdf More

Non Verbal Reasoning Grouping of Identical Figures Questions More

1000+ Transformation of Sentences Worksheet with Answers Pdf More

Oracle RAC Interview Questions and Answers for Experienced More

1000+ Reservoir Engineering Interview Questions and Answers More

Important Banking and Finance Abbreviations Pdf More

Vocabulary Words with Meaning, Synonyms and Antonyms Pdf More

World History Objective Type Questions and Answers 2020-2021 More