Aptitude - Time and Work - Discussion
Discussion Forum : Time and Work - General Questions (Q.No. 15)
15.
10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
Answer: Option
Explanation:
| 1 woman's 1 day's work = | 1 |
| 70 |
| 1 child's 1 day's work = | 1 |
| 140 |
| (5 women + 10 children)'s day's work = |  |
5 | + | 10 |  |
= | |
1 | + | 1 | |
= | 1 |
| 70 | 140 | 14 | 14 | 7 |
5 women and 10 children will complete the work in 7 days.
Discussion:
47 comments Page 1 of 5.
Deepti said:
1 decade ago
How can we write 5 women's and 10 children's 1 day work is 5/70 and 10/140?
Kamlesh jaiswal said:
1 decade ago
10 women's one day work =1/7
So 1 women's one day work =1/70
So 5 women's one day work =5*1/70
Similarly,
1 child's one day work = 1/140
and 10 child's one day work = 10/140
So 1 women's one day work =1/70
So 5 women's one day work =5*1/70
Similarly,
1 child's one day work = 1/140
and 10 child's one day work = 10/140
Mahesh said:
1 decade ago
10 women's one day work =1/7
So 5 women's one day work=1/14
and 10 child's one day work =1/14
So 5 women's and 10 childrens one day work is
= 1/14 + 1/14
= 2/14
= 1/7
Ans: 7 days.
So 5 women's one day work=1/14
and 10 child's one day work =1/14
So 5 women's and 10 childrens one day work is
= 1/14 + 1/14
= 2/14
= 1/7
Ans: 7 days.
Swamy said:
1 decade ago
1 women= 2 childrens
so 5 women+ 10 children=10 women = 7days
so 5 women+ 10 children=10 women = 7days
Kannips said:
1 decade ago
Mahesh realy super.
Santh said:
1 decade ago
Swamy. Good.
Jyothi said:
1 decade ago
hi swamy
super ur brilliant
super ur brilliant
Manikandasenthil said:
1 decade ago
Can any one explain this...
10 women can do the work in 7 days
why can't 5 women can do the work in 7/2 days
I solved it this way and it is not working...
what goes wrong in the middle??
5 women one days' work = 1/(7/2) = 2/7
10 children one days' work = 1/14
2/7 + 1/14 = 98/35??
10 women can do the work in 7 days
why can't 5 women can do the work in 7/2 days
I solved it this way and it is not working...
what goes wrong in the middle??
5 women one days' work = 1/(7/2) = 2/7
10 children one days' work = 1/14
2/7 + 1/14 = 98/35??
Pranathi said:
1 decade ago
@Manikandasenthil;
when u do 7/2 u r not decreasing the no of women working , but u r decreasing the work they do.
just use a simple logic........... when u reduce the no of people wrking the time taken to complete it will increase.......... in that case when u do 7/2 it either appears that the wrk done is reduced to half or, that u hav doubled the no of women wrking.......
when u do 7/2 u r not decreasing the no of women working , but u r decreasing the work they do.
just use a simple logic........... when u reduce the no of people wrking the time taken to complete it will increase.......... in that case when u do 7/2 it either appears that the wrk done is reduced to half or, that u hav doubled the no of women wrking.......
Pranil said:
1 decade ago
Yes this is a good ans.
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