Tiffany has 3 times as many stickers as Dana. Dana has
45 as many stickers as Nicole. If the three of them have a total of 210 stickers, how many stickers does Tiffany have?
Tiffany |
Dana |
Nicole |
3x4 |
1x4 |
|
|
4x1 |
5x1 |
12 u |
4 u |
5 u |
The number of stickers that Dana has is repeated. Make the number of stickers that Dana has the same. LCM of 1 and 4 is 4.
Total number of stickers that the three of them have
= 12 u + 4 u + 5 u
= 21 u
21 u = 210
1 u = 210 ÷ 21 = 10
Number of stickers that Tiffany has
= 12 u
= 12 x 10
= 120
Answer(s): 120