book Maths Puzzle Numerical Ability

What is the cost in dollars to steam clean a room W yards wide and L yards long if the steam cleaners charge 10 cents per square foot?

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book Other Question

Bobby and Rick are in a 10-lap race on a one-mile track. Bobby, averaging 90mph, has completed two laps just as Rick is getting his car onto the track. What speed does Rick have to average to be even with Bobby at the end of the tenth lap? How do i factor the trinomial; 6x2 + 8x + 2? ( 6x2 means 6x squared)

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