Xuan had 245 cards. Nick had 37 of what Xuan had. After Xuan used some of his cards and Nick used 15 of his cards, Xuan had 12 as many cards left as Nick.
- How many cards did Nick have at first?
- How many cards did Xuan use?
| |
Xuan |
Nick |
| Before |
245 |
105 |
| Change |
- ? |
- 21 |
| After |
42 |
84 |
(a)
Number of cards that Nick had at first
=
37 x 245
= 105
(b)
Number of cards that Nick used
=
15 x 105
= 21
Number of cards that Nick had left
= 105 - 21
= 84
Number of cards that Xuan had left
=
12 x 84
= 42
Number of cards that Xuan used
= 245 - 42
= 203
Answer(s): (a) 105; (b) 203
