Valen was fixing a jigsaw puzzle. By the second day, the number of pieces he fixed was 25% of the number of pieces unfixed. After another 2 days, he fixed another 304 pieces and the number of unfixed pieces he was left with was 20% of the number of pieces fixed. How many pieces were left unfixed?
|
Fixed |
Unfixed |
Total |
Before |
1x6 = 6 u |
4x6 = 24 u |
5x6 = 30 u |
Change |
+ 304 |
- 304 |
|
After |
5x5 = 25 u |
1x5 = 5 u |
6x5 = 30 u |
25% =
25100 =
14 20% =
25100 =
15 Since this is a jigsaw puzzle, there is no change in the total number of jigsaw pieces. Make the total number of jigsaw pieces the same. LCM of 5 and 6 is 30.
Number of additional pieces of jigsaw puzzle that Valen fixed
= 25 u - 6 u
= 19 u
19 u = 304
1 u = 304 ÷ 19 = 16
Number of pieces that were left unfixed
= 5 u
= 5 x 16
= 80
Answer(s): 80