Nicole had 150 marbles. Tom had 25 of what Nicole had. After Nicole used some of his marbles and Tom used 16 of his marbles, Nicole had 12 as many marbles left as Tom.
- How many marbles did Tom have at first?
- How many marbles did Nicole use?
|
Nicole |
Tom |
Before |
150 |
60 |
Change |
- ? |
- 10 |
After |
25 |
50 |
(a)
Number of marbles that Tom had at first
=
25 x 150
= 60
(b)
Number of marbles that Tom used
=
16 x 60
= 10
Number of marbles that Tom had left
= 60 - 10
= 50
Number of marbles that Nicole had left
=
12 x 50
= 25
Number of marbles that Nicole used
= 150 - 25
= 125
Answer(s): (a) 60; (b) 125