Flynn 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 230 containers. As a result, the total number of painted containers became 10 more than ³₄ of the total number of containers. How many more containers were unpainted than painted on the first day?

	Painted	Not painted	Total
Before	1x4 = 4 u	4x4 = 16 u	5x4 = 20 u
Change	+ 230	- 230
After	4 u + 230	16 u - 230	20 u
Comparing painted and not painted containers in the end	3x5 + 10 = 15 u + 10	1x5 - 10 = 5 u - 10	4x5 = 20 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 4 is 20.

The number of containers painted in the end is repeated.

15 u + 10 = 4 u + 230
15 u - 4 u = 230 - 10
11 u = 220

1 u = 220 ÷ 11 = 20

Number of more containers that were not painted than painted on the first day
= 16 u - 4 u
= 12 u
= 12 x 20
= 240

Answer(s): 240