SOLUTION: if one man paint a room in 4 hours and another man in 2 hours then what time both will take to paint that room
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Question 764918: if one man paint a room in 4 hours and another man in 2 hours then what time both will take to paint that room Found 2 solutions by Cromlix, josmiceli:Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! 1/2 + 1/4 = 1/x
Denominator = 4x
2x + x = 4
3x = 4
x = 4/3
x = 1 1/3 hours
x = 1 hour 20 minutes
Hope this helps.
:-)
You can put this solution on YOUR website! add their rates of painting
1st man's rate: ( 1 room ) / ( 4 hrs )
2nd man's rate: ( 1 room ) / ( 2 hrs )
Rate working together: ( 1 room ) / ( x hrs )
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Multiply both sides by
Both working together will take hrs, or
1 hr 20 min
