Linda has 30% as many erasers as Jaslyn. Jaslyn has 110% as many erasers as Wendy. If Jaslyn gives 55 erasers to Wendy, both will then have an equal number of erasers. Find the average number of erasers the three of them have.

Linda	Jaslyn	Wendy
3x11	10x11
	11x10	10x10
33 u	110 u	100 u

30% = ³⁰₁₀₀ = ³₁₀
110% = ¹¹⁰₁₀₀= ¹¹₁₀

The number of erasers that Linda has is repeated.  Make the number of erasers that Linda has the same. LCM of 10 and 11 is 110.

	Jaslyn	Wendy	Total
Before	110 u	100 u	210 u
Change	- 5 u	+ 5 u
After	105 u	105 u	210 u

Total number of erasers that Jaslyn and Wendy have
= 110 u + 100 u
= 210 u

After Jaslyn gives to Wendy, both of them will have the same number of erasers. 

The total number of erasers that Jaslyn and Wendy have remains unchanged.

Number of erasers that each of them will have
= 210 u ÷ 2
= 105 u

Number of erasers that Jaslyn gives to Wendy
= 110 u - 105 u
= 5 u

5 u = 55

1 u = 55 ÷ 5 = 11

Total number of erasers that three of them have
= 210 u + 33 u
= 243 u

Average number of erasers that each of them have
= 243 u ÷ 3
= 81 u
= 81 x 11
= 891

Answer(s): 891