Bryan and Ahmad had 96 staplers together. Ahmad had 2 less staplers than Bryan. Both of them sold some of their staplers. Ahmad sold 40% more staplers than what Bryan sold. In the end, Ahmad had half as many staplers left as Bryan. How many staplers had Ahmad left?
| |
Bryan
(1) |
Ahmad
(2) |
Make p the same
(2)x2 = (3) |
Comparing Bryan
and Ahmad at first |
2 more |
|
|
| Before |
49 |
47 |
94 |
| Change |
- 5 u |
- 7 u |
- 14 u |
| After |
2 p |
1 p |
2 p |
Number of staplers that Ahmad had at first
= (96 - 2) ÷ 2
= 94 ÷ 2
= 47
Number of staplers that Bryan had at first
= 47 + 2
= 49
Number of staplers that Ahmad sold in percent
= 100% + 40%
= 140%
140% =
140100 =
75 Make p the same.
(1) = (3)
49 - 5 u = 94 - 14 u
14 u - 5 u = 94 - 49
9 u = 45
1 u = 45 ÷ 9 = 5
Number of staplers that Ahmad had left
= 47 - 7 u
= 47 - 7 x 5
= 47 - 35
= 12
Answer(s): 12
