Kathy had 96 markers.
78 of them were silver markers and the rest were brown markers. After she had given away some silver markers, the ratio of the number of silver markers to the number of brown markers became 3 : 4. How many markers did she have in the end?
| |
Silver |
Brown |
Total |
| Before |
7x4 =
28 u |
1x4 =
4 u |
8x4 =
32 u |
| Change |
- 25 u |
|
|
| After |
3 u |
4 u |
7 u |
The number of brown markers remained unchanged.
LCM of 1 and 4 = 4
Total number of markers at first = 32 u
32 u = 96
1 u = 96 ÷ 32 = 3
Number of markers that Kathy had in the end
= 3 u + 4 u
= 7 u
= 7 x 3
= 21
Answer(s):21
