Juan ate 1/3
Jelly beans remaining = 1 - 1/3 = 2/3
Maria ate 3/4 of the remaining = 3/4 x 2/3 = 1/2
Jelly beans remaining = 2/3 - 1/2 = 1/6
1/6 of the jelly beans = 10
Total number of jelly beans = 10 x 6 = 60
Answer : There are 60 jelly beans in the bag at first.
