Jade had 16 more cards than Opal. After Opal gave away
14 of her cards, Jade had twice as many cards as Opal. How many cards did Opal have at first?
| |
Jade |
Opal |
Comparing Jade and
Opal at first |
16 more |
|
| Before |
6 u |
4 u |
| Change |
|
- 1 u |
| After |
6 u |
3 u |
Comparing Jade and
Opal in the end |
2x3 =
6 u |
1x3 =
3 u |
Number of cards that Opal had in the end is repeated. Make the number of cards that Opal had in the end the same. LCM of 1 and 3 is 3.
Number of cards that Jade had at first = 6 u
Number of cards that Jade had more than Opal at first
= 6 u - 4 u
= 2 u
2 u = 16
1 u = 16 ÷ 2 = 8
Number of cards that Opal had at first
= 4 u
= 4 x 8
= 32
Answer(s): 32
