A MAN CAN PANT A WALL IN ONE HOUR ANOTHER CAN PAINT THE SAME WALL IN INONE AND HALF HOURS ,IF BOTH START PAINT

ONE MAN CAN PAINT A WALL IN ONE HOUR,ANOTHER CAN PAINT THESAME WALL IN ONE AND HALF HOUR IF BOTH START PAINTING THE SAME WALL HOW LONG WILL THEY TAKE?A MAN CAN PANT A WALL IN ONE HOUR ANOTHER CAN PAINT THE SAME WALL IN INONE AND HALF HOURS ,IF BOTH START PAINT
First change the units.


1hour=60 minutes 1and 1/2 hour=90minutes


We can now reword this to say:





A man can paint the wall in 1/60 of an hour, and another man can paint the same wall in 1/90 of an hour





together they complete 1/60+1/90=1/36 of the wall in an hour.





The time it will take them to complete the wall is simply the reciprocal of the value. Just as we took the reciprocal to find the values above, so





It will take them together 36 minutes to paint the wall.A MAN CAN PANT A WALL IN ONE HOUR ANOTHER CAN PAINT THE SAME WALL IN INONE AND HALF HOURS ,IF BOTH START PAINT
35 minutes.
What kinda paint
20 minutes

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