Question

Akhil and Bhanu can do a piece of work in 4 days, Bhanu and Chinku in 6 days, and Akhil, Bhanu and

Chinku all together in 3 days. What time will Akhil and Chinku take to do it?

A) 4 days B) 8 days

C) 12 days D) 14 days​

Answer 1

Answer:

A) 4 days

Step-by-step explanation:

Akhil and Bhanu work in 4days,

Bhanu and Chinku work in 6days,

Akhil, Bhanu, Chinku works in 3 days

Total work is LCM of 4, 6, 3= 36 unit

Effeciancy of all is 36/3=12

Effeciancy of akhil & Bhanu is 36/4=9, Effeciancy of Chinku = 12-9=3,

Effeciancy of Bhanu & Chinku = 36/6=6, Effeciancy of akhil =12-6=6,

NOW EFFECIANCY of Akhil & Chinku = 3+6=9, So Akhil and Chinku can do it 36/9=4days