Ryan and Daniel had 34 markers together. Daniel had 2 less markers than Ryan. Both of them sold some of their markers. Daniel sold 20% more markers than what Ryan sold. In the end, Daniel had half as many markers left as Ryan. How many markers had Daniel left?
| |
Ryan
(1) |
Daniel
(2) |
Make p the same
(2)x2 = (3) |
Comparing Ryan
and Daniel at first |
2 more |
|
|
| Before |
18 |
16 |
32 |
| Change |
- 5 u |
- 6 u |
- 12 u |
| After |
2 p |
1 p |
2 p |
Number of markers that Daniel had at first
= (34 - 2) ÷ 2
= 32 ÷ 2
= 16
Number of markers that Ryan had at first
= 16 + 2
= 18
Number of markers that Daniel sold in percent
= 100% + 20%
= 120%
120% =
120100 =
65 Make p the same.
(1) = (3)
18 - 5 u = 32 - 12 u
12 u - 5 u = 32 - 18
7 u = 14
1 u = 14 ÷ 7 = 2
Number of markers that Daniel had left
= 16 - 6 u
= 16 - 6 x 2
= 16 - 12
= 4
Answer(s): 4
