Mrs Chua gave Mary and Wendy some money each on Tuesday. On Wednesday, Mary gave
16 of the amount she had to Wendy. On Thursday, Wendy gave
14 of the amount she had to Mary. In the end, Mary had $52 and Wendy had $6. How much did Wendy had more than Mary at first?
| |
Mary |
Wendy |
Total |
| Before 1 |
6 u |
? |
$58 |
| Change 1 |
- 1 u |
+ 1 u |
|
| After 1 |
5 u |
4 p |
$58 |
| Before 2 |
$52 - 1 p |
4 p |
$58 |
| Change 2 |
+ 1 p |
- 1 p |
|
After 2 |
$52 |
3 p
($6) |
$58 |
Amount that Wendy had in the end = 3 p
3 p = 6
1 p = 6 ÷ 3 = 2
Working backwards.
Amount that Mary had after giving to Wendy on Wednesday
= 52 - 1 p
= 52 - 2
= $50
5 u = 50
1 u = 50 ÷ 5 = 10
Amount that Mary had at first
= 6 u
= 6 x 10
= $60
Total amount that Mary and Wendy had
= 52 + 6
= $58
Amount that Wendy had at first
= 58 - 60
= $-2
Amount that Mary had more than Wendy
= 60 - -2
= $62
Answer(s): $62
