PSLE At first, Opal had 94 cards and some beads. After she gave away 83 cards and 30% of the beads, she had a total of 60 cards and beads. How many beads did Opal give away?
|
Cards |
Beads |
Total |
Before |
94 |
10 u |
|
Change |
- 83 |
- 3 u |
|
After |
11 |
7 u |
60 |
30% =
30100 =
310 Number of cards that Opal left
= 94 - 83
= 11
Number of beads that Opal left
= 60 - 11
= 49
7 u = 49
1 u = 49 ÷ 7 = 7
Number of beads that Opal gave away
= 3 u
= 3 x 7
= 21
Answer(s): 21