Question

please solve this for me i want to check it​

Answer 1

Answer:

for a work

A+B=30days

if 20 days work together=A+B ,left together working days for whole work 30-20=10days

then 10 days work by alone it takes .20 days means 2 times of 10(2x10=20) by A

;then alone A work for whole work =30x2=60 days ,(Ans.)

60 days