
Unitary Method


Method





 If 15 men can reap a field in 35 days,
in how many days will 21 men reap the field?
 If 20 persons can do a piece of work in 7 days,
then the number of persons required to complete the work in 28 days, is :
 If 3 persons weave 168 shawls in 14 days,
how many shawls will 8 persons weave in 5 days?
 If 15 labourers can fill 35 boxes in 7 days.
How many labourers can fill 65 boxes in 5 days?
 If 18 binders bind 900 books in 10 days,
how many binders will be required to bind 660 books in 12 days?
 If 40 men can build a wall 20 m high in 15 days.
The number of men required to build a similar wall 25 m high in 6 days, will be :
 If 40 persons consume 240 kg of rice in 15 days,
in how many days will 30 persons consume 48 kg of rice?
 If 5 men working 6 hours a day can reap a field in 20 days,
in how many days will 15 men reap the field, working 8 hours a day?
 If 18 pumps can raise 2170 tonnes of water in 10 days, working 7 hours a day,
in how many days will 16 pumps raise 1736 tonnes, working 9 hours a day?
 In a hospital there is a consumption of 1350 litres of milk for 70 patients for 30 days.
How many patients will consume 1710 litres of milk in 28 days?





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