PSLE At first, Zoe had 50 coins and some stickers. After she gave away 35 coins and 30% of the stickers, she had a total of 78 coins and stickers. How many stickers did Zoe have at first?
|
Coins |
Stickers |
Total |
Before |
50 |
10 u |
|
Change |
- 35 |
- 3 u |
|
After |
15 |
7 u |
78 |
30% =
30100 =
310 Number of coins that Zoe left
= 50 - 35
= 15
Number of stickers that Zoe left
= 78 - 15
= 63
7 u = 63
1 u = 63 ÷ 7 = 9
Number of stickers that Zoe had at first
= 10 u
= 10 x 9
= 90
Answer(s): 90