Olivia, Lucy and Anna have 198 coins. Olivia has
56 as many coins as Lucy. Anna's coins is
15 of the total number of Olivia's and Lucy's coins. How many coins must Lucy give to Anna so that both Olivia and Anna will have the same number of coins?
Olivia |
Lucy |
Anna |
Total |
5x11 = 55 u |
1x11 = 11 u |
|
5x5 = 25 u |
6x5 = 30 u |
|
|
25 u |
30 u |
11 u |
198 |
Total number of coins
= 25 u + 30 u + 11 u
= 66 u
66 u = 198
1 u = 198 ÷ 66 = 3
Olivia |
Lucy |
Anna |
Total |
25 u |
30 u |
11 u |
198 |
|
- 14 u |
+ 14 u |
|
25 u |
16 u |
25 u |
198 |
Number of coins that Lucy must give to Anna
= 25 u - 11 u
= 14 u
= 14 x 3
= 42
Answer(s): 42