Vanessa has 25% as many marbles as Jean. Jean has 130% as many marbles as Lynn. If Jean gives 30 marbles to Lynn, both will then have an equal number of marbles. Find the average number of marbles the three of them have.

Vanessa	Jean	Lynn
1x13	4x13
	13x4	10x4
13 u	52 u	40 u

25% = ²⁵₁₀₀ = ¹₄
130% = ¹³⁰₁₀₀= ¹³₁₀

The number of marbles that Vanessa has is repeated.  Make the number of marbles that Vanessa has the same. LCM of 4 and 13 is 52.

	Jean	Lynn	Total
Before	52 u	40 u	92 u
Change	- 6 u	+ 6 u
After	46 u	46 u	92 u

Total number of marbles that Jean and Lynn have
= 52 u + 40 u
= 92 u

After Jean gives to Lynn, both of them will have the same number of marbles. 

The total number of marbles that Jean and Lynn have remains unchanged.

Number of marbles that each of them will have
= 92 u ÷ 2
= 46 u

Number of marbles that Jean gives to Lynn
= 52 u - 46 u
= 6 u

6 u = 30

1 u = 30 ÷ 6 = 5

Total number of marbles that three of them have
= 92 u + 13 u
= 105 u

Average number of marbles that each of them have
= 105 u ÷ 3
= 35 u
= 35 x 5
= 175

Answer(s): 175