Aptitude - Time and Work - Discussion

Discussion Forum : Time and Work - General Questions (Q.No. 2)
2.
A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:

9 1 days
5

9 2 days
5

9 3 days
5

10
Answer: Option
Explanation:

(A + B + C)'s 1 day's work = 1 ,
4

A's 1 day's work = 1 ,
16

B's 1 day's work = 1 .
12

Therefore C's 1 day's work = 1 - ( 1 + 1 ) = ( 1 - 7 ) = 5 .
4 16 12 4 48 48

So, C alone can do the work in 48 = 9 3 days.
5 5

Discussion:
224 comments Page 18 of 23.

Aaja said:   1 decade ago
Hi,

How to convert decimal to fraction?

Vaishu said:   7 years ago
How did 1/4 become total one day's work?

Chethan k m said:   1 decade ago
How to write 48/5 in the form of 9 3/5?

Siva said:   7 months ago
Good and clear explanation. Thanks all.
(22)

Vignesh said:   5 years ago
@Neha.

It is 48/5=> 45+3/5 = 9 * 3/5.

Neha k. said:   6 years ago
I can't understand 9 3/5 last answer.

Bharathi said:   1 decade ago
How should know A, B, C work is 1/4.

Sunil said:   1 decade ago
Why 48/5 is written? please help me.

Kaustav said:   1 decade ago
One step equation:1/16+1/12+1/x=1/4.

Prachi said:   1 decade ago
Can you explain me why 5/48 reverse?


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