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Question (31)

QN009019

A rally starts with 120 members and 9 leave every hour. How many members remain after 5 hours?

(A) 65
(B) 75
(C) 85
(D) 95

Correct Answer: B

Explanation:

120−9×5=75

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Question (32)

QN009020

A rectangle has length 13 cm and breadth 8 cm. Its area is:

(A) 91 cm²
(B) 94 cm²
(C) 104 cm²
(D) 117 cm²

Correct Answer: C

Explanation:

13×8=104

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Question (33)

QN009021

A rectangular box has dimensions 7 cm, 11 cm and 5 cm. Its volume is:

(A) 275 cm³
(B) 350 cm³
(C) 385 cm³
(D) 420 cm³

Correct Answer: C

Explanation:

7×11×5=385

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Question (34)

QN009022

Sarita reads 20 pages daily from a 500-page book. How many pages remain after 15 days?

(A) 180
(B) 200
(C) 220
(D) 250

Correct Answer: B

Explanation:

500−20×15=200

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Question (35)

QN009023

The cost function of a journey is C(d)=100+60d. Find the cost for 15 km.

(A) ₹850
(B) ₹900
(C) ₹950
(D) ₹1000

Correct Answer: D

Explanation:

100+60(15)=1000

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Question (36)

QN009024

For how many kilometres will the journey cost ₹700?

(A) 8 km
(B) 9 km
(C) 10 km
(D) 12 km

Correct Answer: C

Explanation:

100+60d=700⇒d=10

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Question (37)

QN009025

Water height in a tank is given by h=3−0.5t. What is the height after 5 months?

(A) 0 m
(B) 0.5 m
(C) 1 m
(D) 1.5 m

Correct Answer: B

Explanation:

3−0.5(5)=0.5

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Question (38)

QN009026

A plant grows 0.5 feet every month from an initial height of 1.75 feet. What is its height after 7 months?

(A) 4.25 feet
(B) 4.5 feet
(C) 5 feet
(D) 5.25 feet

Correct Answer: D

Explanation:

1.75+0.5×7=5.25

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Question (39)

QN009027

A mobile phone worth ₹10,000 depreciates by ₹800 yearly. What will be its value after 3 years?

(A) ₹6800
(B) ₹7200
(C) ₹7600
(D) ₹8400

Correct Answer: C

Explanation:

10000−800×3=7600

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Question (40)

QN009028

The population of a village is 750 and increases by 50 every year. What will be the population after 6 years?

(A) 950
(B) 1000
(C) 1050
(D) 1100

Correct Answer: C

Explanation:

750+50×6=1050

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Question (31)

A rally starts with 120 members and 9 leave every hour. How many members remain after 5 hours?

Explanation:

Link:

Question (32)

A rectangle has length 13 cm and breadth 8 cm. Its area is:

Explanation:

Link:

Question (33)

A rectangular box has dimensions 7 cm, 11 cm and 5 cm. Its volume is:

Explanation:

Link:

Question (34)

Sarita reads 20 pages daily from a 500-page book. How many pages remain after 15 days?

Explanation:

Link:

Question (35)

The cost function of a journey is C(d)=100+60d. Find the cost for 15 km.

Explanation:

Link:

Question (36)

For how many kilometres will the journey cost ₹700?

Explanation:

Link:

Question (37)

Water height in a tank is given by h=3−0.5t. What is the height after 5 months?

Explanation:

Link:

Question (38)

A plant grows 0.5 feet every month from an initial height of 1.75 feet. What is its height after 7 months?

Explanation:

Link:

Question (39)

A mobile phone worth ₹10,000 depreciates by ₹800 yearly. What will be its value after 3 years?

Explanation:

Link:

Question (40)

The population of a village is 750 and increases by 50 every year. What will be the population after 6 years?

Explanation:

Link:

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