a man finish is job in 15 days and his father takes 2 days and his son finish in 25 days how long will they take if they all work together
Answers
Answer:
150/9 days
Explanation:
X * 1/15+ 1/2+ 1/25 = 1
X * 91/150 = 1
X= 150/9 days
Hope it helps you.
Correct Question :-
A man finish his job in 15 days and his father takes 20 days and his son finish in 25 days how long will they take of they all work together.
Given :-
• A man finish his job = 15 days
• His father finish his job = 20 days
• His son finish his job = 25 days
Solution :-
According to the question,
We have to find if they work together then how long they will they take time to finish his work = ?
Now,
A man finish his job = 15days
The work has been done by man in 1 day = 1/15
His father finish his job = 20 days
The work has been done by his father in 1 day = 1/20
His son finish his job = 25 days
The work has been done by his son in 1 day = 1/25 days
Now,
Work has been finished by all together = Work has been done by man + work of father + work of sun.
= 1/15 + 1/20 + 1/25
By taking LCM
= 20 + 15 + 12 / 300
= 47/300
= 6 days 18 /47 days or 0.15 days