Linda, Tina and Tiffany have 528 marbles. Linda has
56 as many marbles as Tina. Tiffany's marbles is
15 of the total number of Linda's and Tina's marbles. How many marbles must Tina give to Tiffany so that both Linda and Tiffany will have the same number of marbles?
Linda |
Tina |
Tiffany |
Total |
5x11 = 55 u |
1x11 = 11 u |
|
5x5 = 25 u |
6x5 = 30 u |
|
|
25 u |
30 u |
11 u |
528 |
Total number of marbles
= 25 u + 30 u + 11 u
= 66 u
66 u = 528
1 u = 528 ÷ 66 = 8
Linda |
Tina |
Tiffany |
Total |
25 u |
30 u |
11 u |
528 |
|
- 14 u |
+ 14 u |
|
25 u |
16 u |
25 u |
528 |
Number of marbles that Tina must give to Tiffany
= 25 u - 11 u
= 14 u
= 14 x 8
= 112
Answer(s): 112