Zane, Charlie, Oliver and Jeremy paid a total of $105 for a present. Jeremy paid ¹₄ of what the rest paid. Zane paid 40% of what the rest paid. Charlie and Oliver paid an equal amount of money. How much did Oliver pay?

Zane	Charlie	Oliver	Jeremy	Total
4x7			1x7	5x7
2x5	5x5			7x5
	1	1
10 u	9 u	9 u	7 u	35 u

40%= ⁴⁰₁₀₀= ²₅
Zane's share : Total share = 2 : 5

The total amount paid for the present is repeated.  Make the total amount the same.  LCM of 5 and 7 is 35.

Amount that Charlie, Oliver and Jeremy paid = 25 u

Amount that Charlie and Oliver paid
= 25 u - 7 u
= 18 u

The amount that Charlie and Oliver each paid is the same.

Amount that Charlie and Oliver each paid
= 18 u ÷ 2
= 9 u

Cost of the present = 35 u

35 u = 105

1 u = 105 ÷ 35 = 3

Amount that Oliver paid
= 9 u
= 9 x 3
= $27

Answer(s): $27