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:
202 comments Page 12 of 21.
Vicky said:
1 decade ago
2x+3y=1/10 ----- (1)
3x+2y=1/8 ------(2)
we want to find: 2x+1y=?----(3)
any one can solve this
3x+2y=1/8 ------(2)
we want to find: 2x+1y=?----(3)
any one can solve this
Divya said:
8 years ago
Hi, @Mmeera.
How did you solve this how it will come 3/5 in first equation by multiplying *6?
How did you solve this how it will come 3/5 in first equation by multiplying *6?
Rahul said:
1 decade ago
@Meera.
In the first solution you took it x value as 1/10 but it is 1/100. Please elaborate.
In the first solution you took it x value as 1/10 but it is 1/100. Please elaborate.
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
Renju K S said:
10 years ago
@Meera.
Can you explain how you got 3/5 in RHS by multiplying with 6 to the 1st equation?
Can you explain how you got 3/5 in RHS by multiplying with 6 to the 1st equation?
Gopikrishnan said:
8 years ago
Solving these two equations, we get: x =1and y =1.
100 200,
Please explain above the line.
100 200,
Please explain above the line.
Yamuna said:
3 years ago
6m + 8b = 1/10.
2(3m + 4b) =1/10.
3m + 4b = 1/20.
5(3m + 4b) = 5(1/20).
15m + 20b = 1/4.
2(3m + 4b) =1/10.
3m + 4b = 1/20.
5(3m + 4b) = 5(1/20).
15m + 20b = 1/4.
(60)
Kumar said:
2 years ago
6m + 8b = 1/10.
2(3m + 4b) =1/10.
3m + 4b = 1/20.
5(3m + 4b) = 5(1/20).
15m + 20b = 1/4.
2(3m + 4b) =1/10.
3m + 4b = 1/20.
5(3m + 4b) = 5(1/20).
15m + 20b = 1/4.
(130)
Vinutha said:
2 years ago
6m + 8b = 1/10.
2(3m + 4b) =1/10.
3m + 4b = 1/20.
5(3m + 4b) = 5(1/20).
15m + 20b = 1/4.
2(3m + 4b) =1/10.
3m + 4b = 1/20.
5(3m + 4b) = 5(1/20).
15m + 20b = 1/4.
(218)
Anamika said:
9 years ago
Hi everyone I didn't understand this.
So please anyone explain it step by step for me.
So please anyone explain it step by step for me.
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