Craig and Tom, working together, can clean the house in 8 hrs, working alone, Tom takes four times as long as Craig, How long do es it take Craig to clean the house?
2 answers:
Let x = Craig's time
Let y = Tom's time
Create a system of equations to solve this problem.
8 = x + y
y = 4x
Substitute 4x into the y variable in the first equation.
8 = x + 4x. Combine like terms
8 = 5x. Divide each side by 5.
1.6 = x
Craig takes 1.6 hours to clean the house
Answer:
they
Step-by-step explanation:
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