Billy, Oscar, Seth and Elijah paid a total of $84 for a gift. Elijah paid
12 of what the rest paid. Billy paid 40% of what the rest paid. Oscar and Seth paid an equal amount of money. How much did Seth pay?
| Billy |
Oscar |
Seth |
Elijah |
Total |
| 2x7 |
1x7 |
3x7 |
| 2x3 |
5x3 |
7x3 |
| |
1 |
1 |
|
|
| 6 u |
4 u |
4 u |
7 u |
21 u |
40%=
40100=
25 Billy's share : Total share = 2 : 5
The total amount paid for the gift is repeated. Make the total amount the same. LCM of 3 and 7 is 21.
Amount that Oscar, Seth and Elijah paid = 15 u
Amount that Oscar and Seth paid
= 15 u - 7 u
= 8 u
The amount that Oscar and Seth each paid is the same.
Amount that Oscar and Seth each paid
= 8 u ÷ 2
= 4 u
Cost of the gift = 21 u
21 u = 84
1 u = 84 ÷ 21 = 4
Amount that Seth paid
= 4 u
= 4 x 4
= $16
Answer(s): $16
