Emily had 150 cards. Andy had 35 of what Emily had. After Emily used some of his cards and Andy used 19 of his cards, Emily had 12 as many cards left as Andy.
- How many cards did Andy have at first?
- How many cards did Emily use?
| |
Emily |
Andy |
| Before |
150 |
90 |
| Change |
- ? |
- 10 |
| After |
40 |
80 |
(a)
Number of cards that Andy had at first
=
35 x 150
= 90
(b)
Number of cards that Andy used
=
19 x 90
= 10
Number of cards that Andy had left
= 90 - 10
= 80
Number of cards that Emily had left
=
12 x 80
= 40
Number of cards that Emily used
= 150 - 40
= 110
Answer(s): (a) 90; (b) 110
