exam Maths Puzzle Numerical Ability

IF IT TAKES SALLY 4 HOURS TO PAINT A HOUSE AND IT TAKES JOHN 6 HOURS TO PAINT THE SAME HOUSE, HOW LONG WOULD IT TAKE THEM TO PAINT THE SAME HOUSE TOGETHER.

ANSWER: 2 HOURS AND 24 MINUTES

Read Solution (Total 0)

exam Other Question
find the distance betweem (-6,10) and (3,-2) (rad)x-1)=x-3 i know I square them first but then i get lost. please help me.