Sujeet Kr. Karn

• Oct 21st, 2005

 

Answer is 60 minutes.

MAHAVEER PATIL

• Feb 1st, 2006

 

Group of people can achieve it within 24 minutes,

2nd person shall try and achieve it in 35 minutes as against his opponent of 40 minutes

ritu

• Apr 10th, 2006

 

can anyone please explain with the steps how 60 is the answer?

KP LOGESHWARAN

• Apr 16th, 2006

 

Two people work together in 24 mins.

So, their one day work is

(1/A)+(1+B)=(1/24)

One man can complete the work in 40mins

one man's one day work (1/B)= (1/40)

Now,

(1/A)=(1/24)-(1/40)

(1/A)=(1/60)

So, A can complete the work in 60 mins.

KP LOGESHWARAN

• Apr 16th, 2006

 

Let us consider 2 people A and B

A and B work together and complete in 24 mins

(1/A)+(1/B) = (1/24) ====> their one day's work

A alone can do the work in 40 mins

(1/A)=(1/40)  ====> A's one day work

So, (1/B) = (1/24)-(1/40)

(1/B) = (1/60)

So, B can complete the work in 60 mins.

gettopooja

 Profile Answers by gettopooja 

• Jul 10th, 2006

 

simple direct formula let he do in x min then 40*x/40+x=24 which implies x=60min ans

satish

• Oct 4th, 2007

 

A can finish the work in 24min then in 1 min he does 1/24th of the total work

therefore 1/24--->1min then 1/40--->?

    (1/40*1)/1/24==24/40=>60min

petrovmsm

 Profile Answers by petrovmsm 

• Aug 20th, 2010

 

a+b=24
b=40

40/24=100/x
x=2400/40=60 min.

pritiyadav.537

 Profile Answers by pritiyadav.537 

• Oct 10th, 2010

 

60 min. Suppose the amount of work to be done is x.
And two people are A and B.
If A in 40 min can do x work.
then A in 24 min will do 24x/40 work(Unitary method).
the work done by B in 24 min is x-(24x/40)=16x/40.
again apply same metod-
If B does 16x/40 work in 24 minthen B will do x work in 24x/(16x/40)=60 min