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Time & Work Calculation and TNPSC Group II Main Model Question
A can complete a journey in 20 hours. He travels first half of the journey at the rate of 42 km/hr and second half at the rate
of 48 km/hr. Find the total journey in km.
An aeroplane flies along the four sides of a square at the speeds of 400, 600, 800 and 1000 km/h. Find the average speed
of the plane around the field.
A monkey ascends a greased pole 24 metres high. He ascends 4 metres in first minute and slips down 2 metre in the alternate
minute. In which minute, he reaches the top ?
A person can walk a certain distance and drive back in 12 hours. He can also walk both ways in 20 hours. How much
time will he take to drive both ways?
The work done by a man, a woman and a child is in the ratio of 6 : 4 : 2. There are 40 men, 60 women and 72 children in a
factory. Their weekly wages amount to ` 1560, which is divided in the ratio of work done by the men, women and children.
What will be the wages of 30 men, 42 women and 60 children for 2 weeks ?
A flagstaff 35 m high casts a shadow of length 80.5 m. The height of the building, which casts a shadow of length
57.5 m under similar conditions will be:
One hundred men in 20 days do a third of a piece of work. The work is then required to be completed in another 26
days. On the next day (the eleventh day) 100 more men are employed, and on the day after that, another 100. How many
men must be discharged at the end of the 36th day so that the rest of the men, working for the remaining time, will just
complete the work ?