Latest Miscellaneous Company Exam Aptitude Question SOLUTION: 75 boys can complete a work in 24 days.how many men need to complete twice the work in 20 days

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(#M40010978) MISCELLANEOUS COMPAN question Keep an EYE

75 boys can complete a work in 24 days.how many men need to complete twice the work in 20 days

Asked In Miscellaneous Company Exam bala subrahmanyam lanka (12 years ago)

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Akash Soni  (12 years ago)

one man can complete the work in 24*75=1800days = one time work
to Complete the work twice it will be completed in
let M be the no. of worker assign for this therefore the eqn becomes
M*20=2*1800
M=180 workers

Is this solution Helpfull? Yes (13) | No (3)  

NUTAN SINGH  (12 years ago)

MORE WORK, MORE MEN (direct proportion)
LESS DAYS,MORE MEN (indirect proportion)

work 1:2
:: men 75 :x
days 20:24
(1/2 )*(20/24) = (75/x)
x=180

Is this solution Helpfull? Yes (7) | No   

sruthi  (12 years ago)

(Man1*days)/work=(Man2*days)/work (75*24)/1=(x*20)/2 x=180

Is this solution Helpfull? Yes (4) | No   

sadka  (12 years ago)

to complete the work once (24*75 = 1800 ) man-days required.
to complete the wrok twice (2*1800 = 3600) man-days required.
no of days = 20 so
no of workers = 3600/20
= 180

Is this solution Helpfull? Yes (3) | No   

VIJAY CHOUDHARY  (12 years ago)

This question can simply solve by chain rule(Indirect proportion) as
let x be the no of men require to do the twicee of given work in 20 days means to do the given work in 10 days

Indirect proportion:
75:x::10:24
10x=75*24
x=(75*24)/10=180 ans.

Is this solution Helpfull? Yes (2) | No   

Abhishek Jain  (12 years ago)

efficiency of 1 person= 1/(24x75)
so to cal. no. of days for same work
1/(24x75) x D x 20 = 1
D=90
as we have to solve for twice work ans is 180 days...
:)

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satyanarayana  (11 years ago)

Answer is: 180 Days

Is this solution Helpfull? Yes (1) | No   

Praveen  (12 years ago)

75 boys can complete a work in 24 days or twice the work in 48 days: each boy 1/48*75 per day or 3 boys 1/48*25 per day

how many men need to complete twice the work in 20 days (2mens work=3boys)

2 men = 1/48*25 or 1 man 1/48*50 per day or 20/48*50 in 20 days

20/48*50 = 1/24*5 = 1/240. Would take 240 men to complete twice the work in 20 days

Is this solution Helpfull? Yes | No (3)  

satyanarayana  (11 years ago)

Answer is:125 Days

Is this solution Helpfull? Yes | No (1)  

Vaithianathan  (11 years ago)

total work=75*24=1800
The work to complete=3600
Days=20
No of men=3600/20=180

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anitha  (11 years ago)

m*20=2*(75*24)
m*20=3600
m=180

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