It takes a constructor 25 days to complete a road work. Using 30 people he saw that after 15 days the work has done half.
a) How many part of work do 30 people in one day?
b) After 15 days what part of work and how many days are left?
c) If he want to complete work in desired time, how many extra person are required?
Answers
Answer:
A contractor employed 30 men to complete a project in 60 days. But after 20 days, it is observed that only 25% of the work is completed. How many additional men does the contractor need to employ to complete the work on time?
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The required work is to be done in 60 days. But the 30 workers completed 25% of work in 20 days. Therefore
The completed part of work = 25%
The completed work units = 30*20 =600
So 25% of work = 600 units
Total work =2400 units
So to complete the work in time = 40 days to complete the work
Required work units to complete =2400–600
=1800 units.
No of men required to complete 1800 units of work in 40 days = 1800÷40
=45
We have already 30 men. the more men required =45-30=15
Answer:
The required work is to be done in 60 days. But the 30 workers completed 25% of work in 20 days. Therefore
The completed part of work = 25%
The completed work units = 30*20 =600
So 25% of work = 600 units
Total work =2400 units
So to complete the work in time = 40 days to complete the work
Required work units to complete =2400–600
=1800 units.
No of men required to complete 1800 units of work in 40 days = 1800÷40
=45
We have already 30 men. the more men required =45-30=15
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