Answer = 20$
60*4/12
=20$ per person
answer = -8
-1x+8=-5x-24
4x=-32
x=-8
Ethans marbles
; x-1/5x-105=1/3x
:x-3/15x-105=5/15x
:12/15x-105=5/15x
:7/15x=105
:1/15x=15
:x = 225
Cost of the gift=45$ Siti and Zafri ratio = 3:4 = 12:16
Cost of the gift ratio = 2:3 = 6:9
21/(16-9)=3
Cost of the gift= (6+9)x3=45$
Answer = 54 x=Danny's money
y= Jeff's money
x+y126
1/2x-2/3y=0
x+y=126
x-4/3y=0
7/3y=126
2/3y=36
y=54
Verification: 54+36x2=126
Nathan marbles in the beginning=120
Before round 3
Owen= 68x2=136
Mike=124-(136/2)=56
Before round 2
Nathan=88x2=176
Owen=136-88=48
Before round 1
Mike=56x2=112
nathan=176-56=120
Answer=8
F+V-E=2
8+V-14=2
V=8
answer=137
x = stickers
Ken = x-36
Joan = x+65
x+65=2(x-36)
x+65=2x-72
137=x
They both had 137 stickers in the beginning.
Hope this helps:)