Mrs Neo gave Sabrina and Min some money each on Thursday. On Friday, Sabrina gave
14 of the amount she had to Min. On Saturday, Min gave
13 of the amount she had to Sabrina. In the end, Sabrina had $26 and Min had $16. How much did Min had more than Sabrina at first?
| |
Sabrina |
Min |
Total |
| Before 1 |
4 u |
? |
$42 |
| Change 1 |
- 1 u |
+ 1 u |
|
| After 1 |
3 u |
3 p |
$42 |
| Before 2 |
$26 - 1 p |
3 p |
$42 |
| Change 2 |
+ 1 p |
- 1 p |
|
After 2 |
$26 |
2 p
($16) |
$42 |
Amount that Min had in the end = 2 p
2 p = 16
1 p = 16 ÷ 2 = 8
Working backwards.
Amount that Sabrina had after giving to Min on Friday
= 26 - 1 p
= 26 - 8
= $18
3 u = 18
1 u = 18 ÷ 3 = 6
Amount that Sabrina had at first
= 4 u
= 4 x 6
= $24
Total amount that Sabrina and Min had
= 26 + 16
= $42
Amount that Min had at first
= 42 - 24
= $18
Amount that Sabrina had more than Min
= 24 - 18
= $6
Answer(s): $6
