MCQ Test For Class 8 Chapter Direct and Inverse proportion

Q 1 – 10 meters of cloth cost Rs 1000. What will 4 meters cost?
(a) Rs 400
(b) Rs 800
(c) Rs 200
(d) Rs 100.

Q 2 – A horse eats 18 kg of com in 12 days? How much does he eat in 9 days?
(a) 11.5 kg
(b) 12.5 kg
(c) 13.5 kg
(d) 14.5 kg

Q 3 – 20 trucks can hold 150 metric tonnes. How much will 12 trucks hold?
(a) 80 metric tones
(b) 90 metric tones
(c) 60 metric tones
(d) 40 metric tones.

Q 4 – The rent of 7 hectares is Rs 875. What is the rent of 16 hectares ?
(a) Rs 2000
(b) Rs 1500
(c) Rs 1600
(d) Rs 1200.

Q 5 – A shot travels 90 min 1 second. How long will it take to go 225 m?
(a) 2 seconds
(b) 2.5 seconds
(c) 4 seconds
(d) 3.5 seconds.

Q 6 – What is the cost of 50 sticks at Rs 24 per score ?
(a) Rs 30
(b) Rs 40
(c) Rs 50
(d) Rs 60.

Q 7 – If 20 cows eat as much as 15 oxen, how many cows will eat at much as 36 oxen?
(a) 40
(b) 44
(c) 45
(d) 48

Q 8 – 3 knives cost Rs 63. What will 17 knives cost ?
(a) Rs 357
(b) Rs 375
(c) Rs 537
(d) Rs 573

Q 9 – A machine in a soft drink factory fills 600 bottles in 5 hours. How many bottles will it fill in 2 hours?
(a) 120
(b) 180
(c) 150
(d) 240.

Q 10 – If 8 men can do a piece of work in 20 days, in how many days could 20 men do the same work?
(a) 6 days
(b) 8 days
(c) 4 days
(d) 10 days.

Q 11 – If 18 women can reap a field in 7 days, in what time can 6 women reap the same field?
(a) 15 days
(b) 21 days
(c) 30 days
(d) 36 days.

Q 12 – 10 men can dig a trench in 15 days. How long will 3 men take ?
(a) 50 days
(b) 60 days
(c) 100 days
(d) 75 days.

Q 13 – 6 pipes are required to fill a tank in 1 hour. How long will it take if only 5 pipes of the same type are used?
(a) 75 minutes
(b) 72 minutes
(c) 80 minutes
(d) 90 minutes.

Q 14 – If x = ky and when y = 4, x = 8 then k =
(a) 1
(b) 2
(c) 3
(d) 4.

Q 15 – x and y vary inversely with each other. If x – 15 when y = 6, then the value of x when y = 15 is
(a) 2
(b) 4
(c) 5
(d) 6.

Q 16 – If x = 15 and y = 1/30, then x and y are:
(a) Directly proportional
(b) Inverse proportional
(c) Neither directly nor inversely proportional
(d) Cannot be determined

Q 17 – If x and y are directly proportional, then which of the following is correct?
(a) x + y = constant
(b) x – y = constant
(c) xy = constant
(d) x/y = constant

Q 18 – If x ∝ y and x1= 5, y1 = 210 and x2 = 2, then find y2 ?

(a) 200

(b) 84

(c) 99

(d) 70

Q 19 – The scale of a map is given as 1 : 300. Two cities are 4 km apart on the map. The actual distance between them is:
(a) 1000 km
(b) 1100 km
(c) 1200 km
(d) 1300 km

Q 20 – If 12 workers can build a wall in 50 hours, how many workers will be required to do the same work in 40 hours?
(a) 10
(b) 13
(c) 14
(d) 15

Q 21 –

15 books weigh 6 kg. What will 6 books weigh ?
(a) 1.2 kg
(b) 2.4 kg
(c) 3.8 kg
(d) 3 kg.

Q 22 – If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh 2500 grams?
(a) 750
(b) 800
(c) 850
(d) 950

Q 23 – If x = 20 and y = 40, then x and y are:
(a) Directly proportional
(b) Inversely proportional
(c) Neither directly nor inversely proportional
(d) Cannot be determined

Q 24 – 40 cows can graze a field in 16 days. How many cows will graze the same field in 10 days ?
(a) 60
(b) 64
(c) 80
(d) 75.

Q 25 – 3 lambs finish eating turnips in 8 days. In how many days will 2 lambs finish them?
(a) 6
(b) 8
(c) 10
(d) 12.

Q 26 – If an amount of food lasts for 40 days for 120 men, how long will it last for 80 men at the same rate?
(a) 50 days
(b) 60 days
(c) 80 days
(d) 100 days.

Q 27 – A laborer is paid Rs 400 for 2 days’ work. If he works for 5 days, how much will he get?
(a) Rs 1000
(b) Rs 800
(c) Rs 750
(d) Rs 900.

Q 28 – The fare for a journey of 40 km is Rs 25. How much can be traveled for Rs40?
(a) 32 km
(b) 64 km
(c) 50 km
(d) 60 km.

Q 29 – Apala types 200 words in half an hour. How many words will she type in 12 minutes?
(a) 80
(b) 50
(c) 100
(d) 60.

Q 30 – If 3 quintals of coal cost Rs 6000, what is the cost of 120 kg?
(a) Rs 1200
(b) Rs 2400
(c) Rs 3600
(d) Rs 4800.

Q 31 – A train travels 60 km in 1 hour. How long will it take to go 150 km?
(a) 2 hours
(b) 3 hours
(c) 2.5 hours
(d) 4 hours.

Q 32 – 15 men can mow 40 hectares of land in 1 day. How much will 6 men mow in 1 day?
(a) 16 hectares
(b) 12 hectares
(c) 20 hectares
(d) 24 hectares.

Q 33 – A man walks 20 km in 5 hours. How long would he take in walking 32 km?
(a) 3 hours
(b) 4 hours
(c) 6 hours
(d) 8 hours.

Q 34 – 8 g of sandalwood cost Rs 40. What will 10 g cost?
(a) Rs 30
(b) Rs 36
(c) Rs 48
(d) Rs 50.

Q 35 – A boy runs 1 km in 10 minutes. How long will he take to ran 600 m?
(a) 2 minutes
(b) 3 minutes
(c) 4 minutes
(d) 6 minutes.

Q 36 – 120 copies of a book cost Rs 600. What will 400 copies cost?
(a) Rs 1000
(b) Rs 2000
(c) Rs 3000
(d) Rs 240