Answer:41/60
Explanation:
3/5 and 4/7 can also be expressed as 21/30 and 20/30 respectively.
(7 and 5 have a common multiple of 30) if you multiply both of these by 2/2 (aka 1) then you get 42/60 and 40/60 respectively.
In between these 2 fractions is 41/60.