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4)

variables d and w

5d +1(4d)=36

9d=36

d=4       w=4x4=16

difference of price $12


5)

E  5 comics

F= 10

G=20

e+ (e+5) + 2(e+5)=35

e+ e+5 + 2e +10 =35

4e +15=35

4e=20

e=5

Eugene = 5 comics

6)

Agnes and Billy had each 300 (after drinking it will be less water)

A   300-200 =100

B  300-100  =200



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