Mrs Heng gave Esther and Julie some money each on Thursday. On Friday, Esther gave
16 of the amount she had to Julie. On Saturday, Julie gave
15 of the amount she had to Esther. In the end, Esther had $55 and Julie had $40. How much did Julie had more than Esther at first?
| |
Esther |
Julie |
Total |
| Before 1 |
6 u |
? |
$95 |
| Change 1 |
- 1 u |
+ 1 u |
|
| After 1 |
5 u |
5 p |
$95 |
| Before 2 |
$55 - 1 p |
5 p |
$95 |
| Change 2 |
+ 1 p |
- 1 p |
|
After 2 |
$55 |
4 p
($40) |
$95 |
Amount that Julie had in the end = 4 p
4 p = 40
1 p = 40 ÷ 4 = 10
Working backwards.
Amount that Esther had after giving to Julie on Friday
= 55 - 1 p
= 55 - 10
= $45
5 u = 45
1 u = 45 ÷ 5 = 9
Amount that Esther had at first
= 6 u
= 6 x 9
= $54
Total amount that Esther and Julie had
= 55 + 40
= $95
Amount that Julie had at first
= 95 - 54
= $41
Amount that Esther had more than Julie
= 54 - 41
= $13
Answer(s): $13
