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:
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:
201 comments Page 2 of 21.
Chetan said:
1 decade ago
Proceed the same way as Meera has done it for Sangeeta.
Richa said:
1 decade ago
Hi siddhu! thanks friend.
Manav said:
1 decade ago
@ vicky
2(3x+4y)= 1/10
now, take that 2 to the other side of the eqn, we get
3x+4y= 1/20
2(3x+4y)= 1/10
now, take that 2 to the other side of the eqn, we get
3x+4y= 1/20
Himadri said:
1 decade ago
This is also easy way friends...
6x+8y=1/10
2(3x+4y)=1/10
3x+4y=1/20
both side multiple with 5
15x+20y=1/4
so 1/4 work complete =1 day
total work=4days
6x+8y=1/10
2(3x+4y)=1/10
3x+4y=1/20
both side multiple with 5
15x+20y=1/4
so 1/4 work complete =1 day
total work=4days
Pradeep kumar said:
1 decade ago
The solution is being given by you is 100 % satisfying. Thanks to all.
Subrata Dev said:
1 decade ago
Excellent solving. Thanks for nice math solving.
Thanks
Thanks
Rupali said:
1 decade ago
Thank you siddharth. The most simple way to explain the method. :-).
Chandra said:
1 decade ago
So we have, 3x+4y=1/20...ok...
now
in equ 3, take 5 common;
we get:
=5(3x+4y) (3x+4y=1/20)----->//siddu can u explain me this step.
=5*(1/20)
=4 (ans)
now
in equ 3, take 5 common;
we get:
=5(3x+4y) (3x+4y=1/20)----->//siddu can u explain me this step.
=5*(1/20)
=4 (ans)
Rithesh said:
1 decade ago
Siddu I am impressed I hope you continue giving answer like that.
Ragavi said:
1 decade ago
Siddu you are excellent. Please keep help us with your short cutz:).
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