Kylie and Vaidev collect marbles and erasers. Vaidev has 88 more erasers than marbles. Vaidev has 2 times the number of marbles Kylie has, and Kylie has 25% more erasers than Vaidev. After Kylie gives Vaidev all of her marbles and Vaidev gives Kylie 75% of his erasers, Vaidev has 3 more marbles than erasers. Find the number of erasers Kylie has at first.

Kylie		Vaidev
Erasers	Marbles	Erasers	Marbles
2.5 u + 110	1 u	2 u + 88	2 u
+ 1.5 u + 66	- 1 u	- 1.5 u - 66	+ 1 u
4 u + 176	0	0.5 u + 22	3 u

100% + 25% = 125% 

125% x 2 u
= ¹²⁵₁₀₀ x 2 u
= 2.5 u

125% x 88
= ¹²⁵₁₀₀ x 88
= 110 

75% x 2 u
= ⁷⁵₁₀₀ x 2 u
= 1.5 u  

75% x 88 
= ⁷⁵₁₀₀ x 88
= 66 

If another 3 erasers are given to Vaidev, he will have equal number of erasers and marbles in the end.
3 u = 0.5 u + 22 + 3
3 u - 0.5 u = 25
2.5 u = 25

1 u = 25 ÷ 2.5 = 10

Number of erasers that Kylie has at first
= 2.5 u + 110
= 2.5 x 10 + 110
= 25 + 110
= 135
 
Answer(s): 135