Question

Which of the following sets are equal?
(i)
A= {x:x is a letter in the word FOLLOW
(i)
B= {x:x is a letter in the word FLOW
(ii)
C= {x:x is a letter in the word WOLF​

Answer 1

Answer:

. A and B can do a piece of work in 20 days, B and C together can do it in 10 days and A

and C together can do it 12 days. How long will they take to do it together and each

separately?