Kylie has 3 times as many marbles as Lucy. Lucy has
34 as many marbles as Mary. If the three of them have a total of 48 marbles, how many marbles does Mary have?
| Kylie |
Lucy |
Mary |
| 3x3 |
1x3 |
|
| |
3x1 |
4x1 |
| 9 u |
3 u |
4 u |
The number of marbles that Lucy has is repeated. Make the number of marbles that Lucy has the same. LCM of 1 and 3 is 3.
Total number of marbles that the three of them have
= 9 u + 3 u + 4 u
= 16 u
16 u = 48
1 u = 48 ÷ 16 = 3
Number of marbles that Mary has
= 4 u
= 4 x 3
= 12
Answer(s): 12
