Shannon and Jane collected seashells. Shannon gave 30% of her seashells to Jane and as a result, Jane's seashells increased by 25%. If Shannon had 77 seashells left, find the number of seashells Jane should give to Shannon in the end so that both had an equal number of seashells.

	Shannon	Jane	Comparing the change in Jane's seashells
Before	10x1 = 10 u		4x3 = 12u
Change	- 3x1 = - 3 u	+ 3x1 = + 3 u	+ 1x3 = + 3 u
After	7x1 = 7 u		5x3 = 15 u

30% = ³⁰₁₀₀ = ³₁₀
25% = ²⁵₁₀₀ = ¹₄

The increase in the number of seashells that Jane had is repeated.  Make the increase in the number of seashells that Jane had the same. LCM of 3 and 1 = 3

7 u = 77

1 u = 77 ÷ 7 = 11

Number of seashells that Jane had more than Shannon in the end
= 15 u - 7 u
= 8 u

Number of seashells that Jane should give to Shannon so that both had an equal number of seashells in the end
= 8 u ÷ 2
= 4 u
= 4 x 11
= 44

Answer(s): 44