Mrs Sih gave Emma and Jade some money each on Thursday. On Friday, Emma gave
15 of the amount she had to Jade. On Saturday, Jade gave
13 of the amount she had to Emma. In the end, Emma had $38 and Jade had $20. How much did Jade had more than Emma at first?
| |
Emma |
Jade |
Total |
| Before 1 |
5 u |
? |
$58 |
| Change 1 |
- 1 u |
+ 1 u |
|
| After 1 |
4 u |
3 p |
$58 |
| Before 2 |
$38 - 1 p |
3 p |
$58 |
| Change 2 |
+ 1 p |
- 1 p |
|
After 2 |
$38 |
2 p
($20) |
$58 |
Amount that Jade had in the end = 2 p
2 p = 20
1 p = 20 ÷ 2 = 10
Working backwards.
Amount that Emma had after giving to Jade on Friday
= 38 - 1 p
= 38 - 10
= $28
4 u = 28
1 u = 28 ÷ 4 = 7
Amount that Emma had at first
= 5 u
= 5 x 7
= $35
Total amount that Emma and Jade had
= 38 + 20
= $58
Amount that Jade had at first
= 58 - 35
= $23
Amount that Emma had more than Jade
= 35 - 23
= $12
Answer(s): $12
