Problema Solution
carrie can paint a room for 50 min.if she works with ty,they can paint it for 30 min.how long would it take ty to paint the room by himself
Answer provided by our tutors
lets say that Ty needs x min to paint the room by himself
the rate of Carrie is 1 room in 50 min that is 1/50 rooms per minute
the rate of Ty is 1 room in x min that is 1/x rooms per minute
the together rate is 1 room in 30 min that is 1/30 rooms per minute
1/50 + 1/x = 1/30
by solving we find
x = 75 min
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Ty can paint a room for 75 minutes.