A and b can together finish work in 30 days .They worked together for 20 days and then b left. After another 20 days, a finished the remaining work .In how many days a alone can finish the job? Select one:
a. 40
b. 54
c. 50
d. 60
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0
Answer:
60
Step-by-step explanation:
a and b did the job in 30 days. in one day, they did 1/30 of the job. in 20 days they did 1/30 * 20 = 2/3 of the job. the remaining 1/3 of the job was completed by a alone in 20 days. so, he would take 20*3 = 60 days to complete the job alone.
Answered by
0
Answer:
60
Step-by-step explanation:
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