Winnie has 3 times as many marbles as Risa. Risa has
27 as many marbles as Fanny. If the three of them have a total of 60 marbles, how many marbles does Winnie have?
Winnie |
Risa |
Fanny |
3x2 |
1x2 |
|
|
2x1 |
7x1 |
6 u |
2 u |
7 u |
The number of marbles that Risa has is repeated. Make the number of marbles that Risa has the same. LCM of 1 and 2 is 2.
Total number of marbles that the three of them have
= 6 u + 2 u + 7 u
= 15 u
15 u = 60
1 u = 60 ÷ 15 = 4
Number of marbles that Winnie has
= 6 u
= 6 x 4
= 24
Answer(s): 24