Nicole had 270 cards. Tom had 23 of what Nicole had. After Nicole used some of his cards and Tom used 12 of his cards, Nicole had 16 as many cards left as Tom.
- How many cards did Tom have at first?
- How many cards did Nicole use?
|
Nicole |
Tom |
Before |
270 |
180 |
Change |
- ? |
- 90 |
After |
15 |
90 |
(a)
Number of cards that Tom had at first
=
23 x 270
= 180
(b)
Number of cards that Tom used
=
12 x 180
= 90
Number of cards that Tom had left
= 180 - 90
= 90
Number of cards that Nicole had left
=
16 x 90
= 15
Number of cards that Nicole used
= 270 - 15
= 255
Answer(s): (a) 180; (b) 255