Practice the questions given in the worksheet on unitary method. We know, for finding the unit cost we divided the total cost by the total number of articles.
And, for finding the cost of more than one articles we multiply the unit cost by the number of articles required.
Solve the following:
1. The cost of 7 toys is $ 294. Find the cost of 2 toys.
2. Mike can walk 128 km in 16 hours. What distance can he walk in 3 hours?
3. The cost of 12 kg of sugar is $ 240. What will be the cost of 3 kg of sugar?
4. 12 registers cost $ 720. Find the cost of 5 registers.
5. A train covers 828 km in 9 hours. What distance will it cover in 6 hours?
6. The annual rent of a house is $ 3600. Find the rent of 5 months.
7. Ron earns $ 840 in a week. How much will he earn in 36 days?
8. The cost of 9 liters of petrol is $ 378. How much
will 15 litres of petrol cost?
9. The salary of 12 workers is $ 3732. What will be the salary of 5 workers?
10. The cost of 8 kg of ghee is $ 904. What will be the cost of 14 kg of ghee?
11. 2 school bags cost $ 276. Find the cost of 88 such bags.
12. A bicycle factory produces 1505 bicycles in a week. How many bicycles will it produce in 30 days?
13. Derek earns $ 48000 in 3 months. What is his annual income?
14. In a hostel, 120 students consume 2160 kg of rice per month. How much rice will be consumed by 80 students in a month?
15. 5 buses carry 325 passengers. How many passengers can be carried by 8 such buses?
16. A family consumes 30 kg of sugar in 15 days. How much sugar will be consumed in 275 days?
Answers for the worksheet on unitary method are given below.
Answers:
1. $ 84
2. 24 km
3. $ 60
4. $ 300
5. 552 km
6. $ 1500
7. $ 4320
8. $ 630
9. $ 1555
10. $ 1582
11. $12144
12. 6450 bicycles
13. $ 192000
14. 1440 kg
15. 520 passengers
16. 550 kg
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