Thirty men take 20 days to complete a job working 9 hours a
day. How many hour a day should 40 men work to complete the job?
(a) 8 hrs
(b) 7 1/2 hrs
(c) 7 hrs
(d) 9 hrs
Answer Posted / mahalakshmidevi prathivada
30 * 20 * 9 = 5400 man-hours required to complete the job
:
Let x = no. hrs a day to do the same job (assuming in 20 days)
40 * 20 * x = 5400
800 x = 5400
x = 5400% 800
x = 6.75 hrs a day for 20 days to do the same job
Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
‘a‘ number of persons work daily ‘b’ hours to produce ‘c’ items. If ‘d’ persons walks away from the group what will be the number of hours to produce ‘c’ items. ?
mention your extra-curricular interest. Which do you actively pursue? how do you see these developing in the future?
20% of a 6 litre solution and 60% of 4 litre solution are mixed. What percentage of the mixture of solution ?
a father is 30 times more than his son however he will be only thrice as old as the son what is father's present age ?
If a worker gets late for his work he has to pay a fine of Rs 200 on the first day and the fine increases by 25 Rs per day. If he pays a total amount of Rs 9450, for how many days did he pay for?
five cities. city1 is west to city3. city4 is east to city 5.__ etc.which is farthest on west side.
Why do you want to join gnfc
There are two trees in a lawn. One grows at a rate 3/5 of the other in 4 years. If the total growth of trees is 8 ft. What is the height of the smaller tree after 2 years
In Madras, temperature at noon varies according to -t^2/2 + 8t + 3, where t is elapsed time. Find how much temperature more or less in 4pm to 9pm.
A boy scores 9 marks more than his friend in an exam and has 56% marks of the total of their marks. Calculate the marks scored by each of them.
A family has several children. Each boy in this family has as many sisters as brothers but each girl has twice as many brothers as sisters. How many brothers and sisters are there?
If each of the numbers A, B and C are divisible by 2, then A*B*C must be divisible by
two persons run a race of 100m. the winner won by (110/11)m and one second in time. find the speed of lsoer in met
Differences you see in private and public bank?
A>B,B>C,C=D,D>E,then which is greatest?