Aptitude - Time and Work - Discussion

Discussion Forum : Time and Work - General Questions (Q.No. 6)
6.
If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be:
4 days
5 days
6 days
7 days
Answer: Option
Explanation:

Let 1 man's 1 day's work = x and 1 boy's 1 day's work = y.

Then, 6x + 8y = 1 and 26x + 48y = 1 .
10 2

Solving these two equations, we get : x = 1 and y = 1 .
100 200

(15 men + 20 boy)'s 1 day's work = 15 + 20 = 1 .
100 200 4

15 men and 20 boys can do the work in 4 days.

Discussion:
202 comments Page 15 of 21.

Nandini said:   1 decade ago
Hi. Siddhu really very nice explanation. Thank you so much.

Sakshi said:   1 decade ago
Guys how this 3/5 is coming please anyone explain solution?

Kartik said:   8 years ago
How did we calculate the value for y=1/200? Please explain.

Vicky said:   8 years ago
How did we calculate the value for y=1/200? Please explain.

Sachin said:   9 years ago
Why it takes 1/10 and 1/2 respectively? Please explain me.

Malay said:   6 years ago
Can't understand this 2 equation. Please, anyone, explain.

Bhargavi namballa said:   1 decade ago
I didn't understand. Could you please explain once again?

Subrata Dev said:   1 decade ago
Excellent solving. Thanks for nice math solving.

Thanks

P.swathi said:   1 decade ago
Is there any shot cut formulas to solve x and y values ?

Chetan said:   1 decade ago
Proceed the same way as Meera has done it for Sangeeta.


Post your comments here:

Your comments will be displayed after verification.