Sarah had 140 markers.
34 of them were yellow markers and the rest were blue markers. After she had given away some yellow markers, the ratio of the number of yellow markers to the number of blue markers became 3 : 5. How many markers did she have in the end?
| |
Yellow |
Blue |
Total |
| Before |
3x5 =
15 u |
1x5 =
5 u |
4x5 =
20 u |
| Change |
- 12 u |
|
|
| After |
3 u |
5 u |
8 u |
The number of blue markers remained unchanged.
LCM of 1 and 5 = 5
Total number of markers at first = 20 u
20 u = 140
1 u = 140 ÷ 20 = 7
Number of markers that Sarah had in the end
= 3 u + 5 u
= 8 u
= 8 x 7
= 56
Answer(s):56
