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Question (21)

QN009149

A person walks 4 km farther every day than the previous day, starting with 6 km. How far will the person walk on Day 5?

(A) 18 km
(B) 20 km
(C) 22 km
(D) 24 km

Correct Answer: C

Explanation:

6+(5−1)×4=22

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Question (22)

QN009150

The number of books in a library increases by 250 every month from 5000 books. How many books will there be after 6 months?

(A) 6250
(B) 6400
(C) 6500
(D) 6750

Correct Answer: C

Explanation:

5000+250×6=6500

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Question (23)

QN009151

A tank initially contains 900 L of water and leaks 30 L per hour. After how many hours will it contain 600 L?

(A) 8
(B) 9
(C) 10
(D) 11

Correct Answer: C

Explanation:

900−30h=600

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Question (24)

QN009152

Which equation represents linear growth?

(A) y=5x+2
(B) y=10−4x
(C) y=x 2 +1
(D) y= x 1

Correct Answer: A

Explanation:

Positive coefficient of x indicates growth.

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Question (25)

QN009153

A student’s marks improve by 3 marks every test from an initial score of 40. What will be the score after 7 tests?

(A) 58
(B) 59
(C) 60
(D) 61

Correct Answer: D

Explanation:

40+3×7=61

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Question (26)

QN009154

A battery loses 8% charge every hour from 100%. What will be the charge after 5 hours if the decrease is linear?

(A) 50%
(B) 55%
(C) 60%
(D) 65%

Correct Answer: C

Explanation:

100−8×5=60

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Question (27)

QN009155

Which situation does NOT represent linear growth or decay?

(A) Water leaking steadily
(B) Salary increasing yearly by fixed amount
(C) Population doubling every year
(D) Savings increasing monthly by same amount

Correct Answer: C

Explanation:

Doubling is exponential growth.

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Question (28)

QN009156

A company’s profit increases by ₹12,000 every month from ₹1,20,000. What will be the profit after 5 months?

(A) ₹1,60,000
(B) ₹1,70,000
(C) ₹1,80,000
(D) ₹1,90,000

Correct Answer: C

Explanation:

120000+12000×5=180000

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Question (29)

QN009157

A cyclist reduces speed by 2 km/h every hour from 25 km/h. What will be the speed after 6 hours?

(A) 11 km/h
(B) 12 km/h
(C) 13 km/h
(D) 14 km/h

Correct Answer: C

Explanation:

25−2×6=13

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Question (30)

QN009158

The expression A=75+5n shows:

(A) linear growth
(B) linear decay
(C) quadratic growth
(D) no change

Correct Answer: A

Explanation:

Quantity increases by 5 each step.

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Question (21)

A person walks 4 km farther every day than the previous day, starting with 6 km. How far will the person walk on Day 5?

Explanation:

Link:

Question (22)

The number of books in a library increases by 250 every month from 5000 books. How many books will there be after 6 months?

Explanation:

Link:

Question (23)

A tank initially contains 900 L of water and leaks 30 L per hour. After how many hours will it contain 600 L?

Explanation:

Link:

Question (24)

Which equation represents linear growth?

Explanation:

Link:

Question (25)

A student’s marks improve by 3 marks every test from an initial score of 40. What will be the score after 7 tests?

Explanation:

Link:

Question (26)

A battery loses 8% charge every hour from 100%. What will be the charge after 5 hours if the decrease is linear?

Explanation:

Link:

Question (27)

Which situation does NOT represent linear growth or decay?

Explanation:

Link:

Question (28)

A company’s profit increases by ₹12,000 every month from ₹1,20,000. What will be the profit after 5 months?

Explanation:

Link:

Question (29)

A cyclist reduces speed by 2 km/h every hour from 25 km/h. What will be the speed after 6 hours?

Explanation:

Link:

Question (30)

The expression A=75+5n shows:

Explanation:

Link:

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