PAPER . Q1. If A can do a job in 10 days another person B can do the same job in 20 days, then time required to do the job when both of them working together. A 1/30 B 3/20 To с 1/10 D 20/3
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Answer:
20/3
Step-by-step explanation:
A can do a job in 10 days
Therefore, in 1 day, A can do 1/10th of the job.
B can do a job in 20 days.
Therefore, in 1 day, A can do 1/20th of the job.
Therefore, A & B together can do (1/10 +1/20)= 3/20th of the job.
A & B together can do 3/20th of a job in 1 day.
Hence, A & B together can do the complete job in 20/3 days.
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