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Erik and Albert are both painters. Eric charges $50 for paint and then an additional $30 per hour for labor. Albert charges $80 for paint and then an additional $20 per hour. Determine how many hours until Erik and Albert make the same amount of money ?

Sagot :

x= time in hour.
Eric’s equation
30x+50
Albert’s equation
20x+80

30x+50=20x+80
10x=30
X=3

3 hours.