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 2 of 5.
Ali Umar said:
1 decade ago
Thanks.
Samy super mind.
Samy super mind.
Asha said:
1 decade ago
Well 10 women can complete a work in 7 days and 10 children can do it in 14 days, that means one woman is 2 times efficient than a child therefore 1woman=2 children, therefore 10 children+10 children(or 5 women) can do a work in 14/2 i.e. 7 days.
Karthik kovai said:
1 decade ago
Let simply
x be the woman's 1 day work.
y be the children's 1 day work.
so,
10x= 1/7 ; 10y= 1/14
x= 1/70 ; y= 1/140
then 5*1/70 = 1/14 ; 10*1/140 =1/14
1/4 + 1/4 =1/7
So they will take 7 days to complete.
x be the woman's 1 day work.
y be the children's 1 day work.
so,
10x= 1/7 ; 10y= 1/14
x= 1/70 ; y= 1/140
then 5*1/70 = 1/14 ; 10*1/140 =1/14
1/4 + 1/4 =1/7
So they will take 7 days to complete.
(1)
Sam said:
1 decade ago
If ratio is 1:2 then (women * women working days/children)
i.e 10*7/10=7
i.e 10*7/10=7
Jyoti said:
1 decade ago
Short and fast
70w=140c
1w=2c
m1d1=m2d2
10X14=20Xd2
d2=7days ans.
70w=140c
1w=2c
m1d1=m2d2
10X14=20Xd2
d2=7days ans.
Jitendra Gupta said:
1 decade ago
Here what we can simply do as follows!
Convert the work into Woman Days (WD) and Children Days (CD)
WD - 7*10 = 70
CD - 14*10 = 140
It means 1 woman is equal to 2 Children.
so now convert woman into children. Means 5 Woman equal to 10 Children + No. of Children
Children Days/No. of Children
140/20 = 7 Days
Convert the work into Woman Days (WD) and Children Days (CD)
WD - 7*10 = 70
CD - 14*10 = 140
It means 1 woman is equal to 2 Children.
so now convert woman into children. Means 5 Woman equal to 10 Children + No. of Children
Children Days/No. of Children
140/20 = 7 Days
Kulbhushan Chaskar said:
1 decade ago
10 W =7 .. 5 W =14
10 C =7 .. 10C =14
1 day work of 5W+10C=1/14+1/14
1/14+1/14=1/7
Hence 7 days.
10 C =7 .. 10C =14
1 day work of 5W+10C=1/14+1/14
1/14+1/14=1/7
Hence 7 days.
Ravi said:
1 decade ago
10 women in 7 days.then v can alsov say 5 women in 14 days.
also 10 children in 14 days.
therfore 1women=2 children.
Now 5 women and 10 children are 20 children(as 1women =2 children).
As 10children in 10days therefore 20 children in 7 days.
also 10 children in 14 days.
therfore 1women=2 children.
Now 5 women and 10 children are 20 children(as 1women =2 children).
As 10children in 10days therefore 20 children in 7 days.
Disha said:
1 decade ago
Love your way to solve the problem. Swamy.
Superb brain.
Superb brain.
Medha Bhatnagar said:
1 decade ago
One more way to do this prob.
5* (1/70) +10* (1/140) =2/14=1/7=7 days.
5* (1/70) +10* (1/140) =2/14=1/7=7 days.
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