Hilda and Sarah have 486 cards altogether. Sarah has five times as many cards as Hilda. How many cards must Sarah give to Hilda so that they have the same number of cards?
|
Hilda |
Sarah |
Total |
Before |
1 u |
5 u |
486 |
Change |
+ ? |
- ? |
|
After |
243 |
243 |
486 |
Total number of cards that Hilda and Sarah have
= 1 u + 5 u
= 6 u
6 u = 486
1 u = 486 ÷ 6 = 81
Number of cards that Hilda and Sarah each has in the end
= 486 ÷ 2
= 243
Number of cards that Sarah must give to Hilda
= 243 - 81
= 162
Answer(s): 162