Question

52. A can do a job in 20 days, B in 30 days and C in 60 days. If A is helped on every 3rd
day by B and C, then in how many days, the job is finished?
ber
A. 12 days
B. 15 days
C. 20 days
D. 10 days​

Answer 1

Answer:

ಬಟ್ ನೀವು ಈ ಬರಹ ದಲ್ಲಿ ಓದಬಹುದು ಖ್ಠಿಞ್ಝ

Answer 2

Answer:

(B) 15

Step-by-step explanation:

A works alone for 2 days and finishes 220 or 110th of the work.

On the 3rd day A, B and C finish 120+130+160=110th of the work.

or in 3 days, 110+110=15th of the work is completed.

Therefore, the job will be completed in 5×3 = 15 days