Lucy had 80 markers.
78 of them were pink markers and the rest were red markers. After she had given away some pink markers, the ratio of the number of pink markers to the number of red markers became 3 : 5. How many markers did she have in the end?
| |
Pink |
Red |
Total |
| Before |
7x5 =
35 u |
1x5 =
5 u |
8x5 =
40 u |
| Change |
- 32 u |
|
|
| After |
3 u |
5 u |
8 u |
The number of red markers remained unchanged.
LCM of 1 and 5 = 5
Total number of markers at first = 40 u
40 u = 80
1 u = 80 ÷ 40 = 2
Number of markers that Lucy had in the end
= 3 u + 5 u
= 8 u
= 8 x 2
= 16
Answer(s):16
