PSLE At first, Ivory had 71 beads and some pens. After she gave away 29 beads and 30% of the pens, she had a total of 84 beads and pens. How many pens did Ivory have at first?
|
Beads |
Pens |
Total |
Before |
71 |
10 u |
|
Change |
- 29 |
- 3 u |
|
After |
42 |
7 u |
84 |
30% =
30100 =
310 Number of beads that Ivory left
= 71 - 29
= 42
Number of pens that Ivory left
= 84 - 42
= 42
7 u = 42
1 u = 42 ÷ 7 = 6
Number of pens that Ivory had at first
= 10 u
= 10 x 6
= 60
Answer(s): 60