Hazel and Vaidev collect coins and stickers. Vaidev has 56 more stickers than coins. Vaidev has 2 times the number of coins Hazel has, and Hazel has 25% more stickers than Vaidev. After Hazel gives Vaidev all of her coins and Vaidev gives Hazel 75% of his stickers, Vaidev has 16 more coins than stickers. Find the number of stickers Hazel has at first.

Hazel		Vaidev
Stickers	Coins	Stickers	Coins
2.5 u + 70	1 u	2 u + 56	2 u
+ 1.5 u + 42	- 1 u	- 1.5 u - 42	+ 1 u
4 u + 112	0	0.5 u + 14	3 u

100% + 25% = 125% 

125% x 2 u
= ¹²⁵₁₀₀ x 2 u
= 2.5 u

125% x 56
= ¹²⁵₁₀₀ x 56
= 70 

75% x 2 u
= ⁷⁵₁₀₀ x 2 u
= 1.5 u  

75% x 56 
= ⁷⁵₁₀₀ x 56
= 42 

If another 16 stickers are given to Vaidev, he will have equal number of stickers and coins in the end.
3 u = 0.5 u + 14 + 16
3 u - 0.5 u = 30
2.5 u = 30

1 u = 30 ÷ 2.5 = 12

Number of stickers that Hazel has at first
= 2.5 u + 70
= 2.5 x 12 + 70
= 30 + 70
= 100
 
Answer(s): 100