Answer:
If Jasmine picked 4/10 (which is equivalent to 2/5) then that would mean Jasmine's friend picked 3/10.
If Jasmine picked 4 berries out of 10, that means Jasmines friend picked 3 berries out of ten.
Explanation:
2/5 x 4 = 8/20
8/20 x 5 = 40/100
three quarters of 40/100 is 30/100