Rachel has 3 times as many coins as Sarah. Sarah has
57 as many coins as Min. If the three of them have a total of 297 coins, how many coins does Rachel have?
Rachel |
Sarah |
Min |
3x5 |
1x5 |
|
|
5x1 |
7x1 |
15 u |
5 u |
7 u |
The number of coins that Sarah has is repeated. Make the number of coins that Sarah has the same. LCM of 1 and 5 is 5.
Total number of coins that the three of them have
= 15 u + 5 u + 7 u
= 27 u
27 u = 297
1 u = 297 ÷ 27 = 11
Number of coins that Rachel has
= 15 u
= 15 x 11
= 165
Answer(s): 165