Twins Leo and Lea were playing with sea shells.
Lea told her twin Leo, "Give me one shell so we shall each have the same number."
But Leo replied, "No. You give me one shell so that I shall have twice as many as you will have."
How many marbles did the twins have before any exchange was made?
Lea has 5 & Lo has 7 marbles.
TumugonBurahinMarbles were not mentioned in the problem.
TumugonBurahin