Hilda has 3 times as many marbles as Sarah. Sarah has
67 as many marbles as Betty. If the three of them have a total of 62 marbles, how many marbles does Hilda have?
Hilda |
Sarah |
Betty |
3x6 |
1x6 |
|
|
6x1 |
7x1 |
18 u |
6 u |
7 u |
The number of marbles that Sarah has is repeated. Make the number of marbles that Sarah has the same. LCM of 1 and 6 is 6.
Total number of marbles that the three of them have
= 18 u + 6 u + 7 u
= 31 u
31 u = 62
1 u = 62 ÷ 31 = 2
Number of marbles that Hilda has
= 18 u
= 18 x 2
= 36
Answer(s): 36