Opal has 3 times as many stickers as Lucy. Lucy has
57 as many stickers as Jaslyn. If the three of them have a total of 162 stickers, how many stickers does Opal have?
Opal |
Lucy |
Jaslyn |
3x5 |
1x5 |
|
|
5x1 |
7x1 |
15 u |
5 u |
7 u |
The number of stickers that Lucy has is repeated. Make the number of stickers that Lucy has the same. LCM of 1 and 5 is 5.
Total number of stickers that the three of them have
= 15 u + 5 u + 7 u
= 27 u
27 u = 162
1 u = 162 ÷ 27 = 6
Number of stickers that Opal has
= 15 u
= 15 x 6
= 90
Answer(s): 90