Rachel and Rena are sharing a bag of jellybeans. Rachel ate 1/5 of the jellybeans. Rena ate 1/6 of the jellybeans left. Rachel then ate 2/5 of the remaining beans. Rena then ate 2/3 of the ones left. Rachel then ate half which left them two yellow jellybeans which the girls shared.
Rachel J/5
Rena (1/6)(4J/5) = 2 J/15
now remaining J - J/5 - 2 J/15
=15 J/15 - 3 J/15 - 2 J/15
= 10 J/15 = 2 J/5
now Rachel eats 2/5 *2 J/5= 4J/25
now have 2 J/5 - 4J/25
= 6 J/25
now Rena eats 2/3
so
1/3 * 6 J/25 = 2 J/25 left
half of that = J/25
so
2 = J/25
J = 50