a-practical-example-1-construction-worker-can-excavate-a-pit-in-3-hours-how-long-will-it-take-3-workers-to-do-this-job-

Question Number 94457 by MJS last updated on 18/May/20

a p r a c t i c a l e x a m p l e

1 construction worker can excavate a

pit in 3 hours . how long will it take 3

workers to do this job ?

Answered by MJS last updated on 18/May/20

the whole day at least

the first worker starts to dig

the second worker helps with good advice

and waits for the third one to return

the third worker left to buy a crate of beer \dots

Commented by PRITHWISH SEN 2 last updated on 19/May/20

ha ha \dots . .

Commented by mr W last updated on 19/May/20

t h e f o r m u l a i s :

i f o n e w o r k e r c a n d o a j o b i n m h o u r s,

t h e n t h e s a m e j o b c a n b e d o n e b y n

w o r k e r s i n

{m n}^{n - 1} h o u r s

Commented by i jagooll last updated on 19/May/20

example

1 worker \Rightarrow 4 hour

5 worker \Rightarrow 4 \times 5^{5 - 1} hour sir ?

Commented by mr W last updated on 19/May/20

t h a t m e a n s, i f 5 o r m o r e w o r k e r s d o a

j o b t o g e t h e r, p r a c t i c a l l y s e e n, t h e y w i l l

n e v e r f i n i s h .

Commented by i jagooll last updated on 19/May/20

ha ha ha \dots