Gillian had 128 markers.
34 of them were purple markers and the rest were blue markers. After she had given away some purple markers, the ratio of the number of purple markers to the number of blue markers became 7 : 8. How many markers did she have in the end?
| |
Purple |
Blue |
Total |
| Before |
3x8 =
24 u |
1x8 =
8 u |
4x8 =
32 u |
| Change |
- 17 u |
|
|
| After |
7 u |
8 u |
15 u |
The number of blue markers remained unchanged.
LCM of 1 and 8 = 8
Total number of markers at first = 32 u
32 u = 128
1 u = 128 ÷ 32 = 4
Number of markers that Gillian had in the end
= 7 u + 8 u
= 15 u
= 15 x 4
= 60
Answer(s):60
