PSLE At first, Sabrina had 91 coins and some cards. After she gave away 69 coins and 40% of the cards, she had a total of 31 coins and cards. How many cards did Sabrina give away?
|
Coins |
Cards |
Total |
Before |
91 |
5 u |
|
Change |
- 69 |
- 2 u |
|
After |
22 |
3 u |
31 |
40% =
40100 =
25 Number of coins that Sabrina left
= 91 - 69
= 22
Number of cards that Sabrina left
= 31 - 22
= 9
3 u = 9
1 u = 9 ÷ 3 = 3
Number of cards that Sabrina gave away
= 2 u
= 2 x 3
= 6
Answer(s): 6