Julie had 210 marbles. Harry had 23 of what Julie had. After Julie used some of his marbles and Harry used 17 of his marbles, Julie had 12 as many marbles left as Harry.
- How many marbles did Harry have at first?
- How many marbles did Julie use?
|
Julie |
Harry |
Before |
210 |
140 |
Change |
- ? |
- 20 |
After |
60 |
120 |
(a)
Number of marbles that Harry had at first
=
23 x 210
= 140
(b)
Number of marbles that Harry used
=
17 x 140
= 20
Number of marbles that Harry had left
= 140 - 20
= 120
Number of marbles that Julie had left
=
12 x 120
= 60
Number of marbles that Julie used
= 210 - 60
= 150
Answer(s): (a) 140; (b) 150