Justin, Vincent and Chen collected stamps in the ratio of 11 : 7 : 10. After Chen gave ³₄ to Justin and Vincent, Chen had 132 less stamps than Justin. The number of stamps that Vincent had increased by 40%. How many stamps did Justin and Chen have in the end?

	Justin	Vincent	Chen
Before	11 u	7 u	10 u
Change	+ 4.7 u	+ 2.8 u	- 7.5 u
After	15.7 u	9.8 u	2.5 u

Number of stamps that Chen gave to Justin and Vincent
= ³₄ x 10 u
= 7.5 u

Number of stamps that Vincent received from Chen
= ⁴⁰₁₀₀ x 7 u
= 2.8 u

Number of stamps that Justin received from Chen
= 7.5 u - 2.8 u
= 4.7 u

Number of less stamps that Chen had less than Justin
= 15.7 u - 2.5 u 
= 13.2 u

13.2 u = 132

1 u = 132 ÷ 13.2 = 10

Number of stamps that Justin and Chen had
= 15.7 u + 2.5 u
= 18.2 u
= 18.2 x 10
= 182

Answer(s): 182