if 30 men completes a job in 15 days working 9 hrs per
day..how much hours per day should 40 men work ??
a ) 35 b)7 1/2 c)30 d) none
Answer Posted / buddhika
convert days in hours so 15*9=135 hours
30 men complete a job in = 135 hours
time for 1 man to complete the same job = 135*30
time for 40 men to do the same job = 135*30/40
then the ans = 101.25
but ask no of hr per day then = 101.25/15
the the ans = 6.75
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
A can work three times as B can work. If A takes 60 days less than B to complete the same task, calculate the number of days when both A and B start working together on the same day.
A speaks truth 70% of the times, B speaks truth 80% of the times.What is the probability that both are contradicting each other is ?
The average of 13 papers is 40. The average of the first 7 papers is 42 and of the last seven papers is 35. Find the marks obtained in the 7th paper?
A can do a piece of work in 20 days, which B can do in 12 days. In 9 days B does ¾ of the work. How many days will A take to finish the remaining work?
Albert and Fernandes have two leg swimming race. Both start from opposite ends of the pool. On the first leg, the boys pass each other at 18 m from the deep end of the pool. During the second leg they pass at 10 m from the shallow end of the pool. Both go at constant speed but one of them is faster. Each boy rests for 4 seconds at the end of the first leg. What is the length of the pool?
Scientific publishing aptitude interview question
If r = 5, n=3 and if first pole has 2 flags, third pole has 1 flag, how many ways can the flags be arranged?
if a man byes 1 lt of milk for 12 rs and mixes with 20% of water and sels it for rs 15 thgen what is percentage of gain
A man can row downstream at a rate of 14 kmpl & upstream at 9 kmpl. Find man's rate in still water ?
perimeter of rectangle is s and the other side is x, then the other side
p and q are positive integers with their average 5, find how many different values can p take
A son and father goes for boating in river upstream . After rowing for 1 mile son notices the hat of his fathe falling in the river. After 5 min. he tells his father that his hat has fallen. So they turn around and are able to pick the hat at the point from where they began boating after 5 min. Tell the speed of river.
There are 7 people who take a test among which M is the worst, R is disqualified, P and S obtain same marks, T scores less than S and Q scores less than P, N scores higher than every one.
if START = WALKA and BUDPI = XZFMR Then STUPID = ?
One dog tells the other that there are two dogs in front of me. The other one also shouts that he too had two behind him. How many are they?