Wesley had to paint some containers. On the first day, the number of containers he painted was 25% of the number of containers that he had not painted. One week later, he painted another 68 containers. As a result, the total number of painted containers became 29 more than ¹₂ of the total number of containers. How many less containers were painted than unpainted on the first day?

	Painted	Not painted	Total
Before	1x2 = 2 u	4x2 = 8 u	5x2 = 10 u
Change	+ 68	- 68
After	2 u + 68	8 u - 68	10 u
Comparing painted and not painted containers in the end	1x5 + 29 = 5 u + 29	1x5 - 29 = 5 u - 29	2x5 = 10 u

25% = ²⁵₁₀₀ = ¹₄
Painted : Not painted = 1 : 4

The total number of containers remains unchanged. Make the total number of containers at first and in the end the same.  LCM of 5 and 2 is 10.

The number of containers painted in the end is repeated.

5 u + 29 = 2 u + 68
5 u - 2 u = 68 - 29
3 u = 39

1 u = 39 ÷ 3 = 13

Number of less containers that were painted than not painted on the first day
= 8 u - 2 u
= 6 u
= 6 x 13
= 78

Answer(s): 78