Penelope, Yen, Jaslyn and Diana went to buy a souvenir for their father. They shared the cost equally among themselves. However, Diana forgot to bring her money. So, the other 3 girls paid for the souvenir first. Jaslyn paid
79 of the amount Penelope and Yen paid. Yen paid $6 more than Penelope. The next day, Diana returned $24 to Jaslyn and some money to Penelope and Yen. How much did Diana return to
- Penelope?
- Yen?
|
Penelope |
Yen |
Jaslyn |
Diana |
Total |
Comparing the amounts 3 girls paid first |
9 u
|
7 u
|
|
16 u
|
Comparing the amounts 2 girls paid first |
1 p
|
1 p + 6
|
|
|
|
Amounts that each girl paid for Diana first |
- ? |
- ? |
- 24
|
+ 24 + ? |
|
Comparing the amounts each girl should pay |
1x4 = 4 u |
1x4 = 4 u |
1x4 = 4 u |
1x4 = 4 u |
4x4 = 16 u |
(a)
The total amount that the 4 girls paid is repeated. Make the total amount the same. LCM of 4 and 16 is 16.
Extra amount that Jaslyn paid
= 7 u - 4 u
= 3 u
3 u = 24
1 u = 24 ÷ 3 = 8
Total amount that Penelope and Yen paid at first
= 9 u
= 9 x 8
= $72
1 p + 1 p + 6 = 72
2 p = 72 - 6
2 p = 66
1 p = 66 ÷ 2 = 33
Amount that Diana needed to pay Penelope
= 1 p - 4 u
= 33 - 4 x 8
= 33 - 32
= $1
(b)
Amount that Diana needed to pay Yen
= (1 p + 6) - 4 u
= (33 + 6) - 4 x 8
= 39 - 32
= $7
Answer(s): (a) $1; (b) $7