self Maths Puzzle

Glenn and Jason each have a collection of tennis balls. Glenn said that if Jason would give him 8 of his balls they would have an equal number; but, if Glenn would give Jason 8 of his balls, Jason would have 3 times as many balls as Glenn. How many balls does Jason have?

Read Solution (Total 1)

Jason have 40 and Glenn 24 balls.
Two conditions satisfied as 24+8 =40-8 and (24-8)3=40+8
12 years agoHelpfull: Yes(0) No(2)

self Other Question

My Dad has a miniature Pyramid of Egypt. It is 6 inches in height. Dad was invited to display it at an exhibition. Dad felt it was too small and decided to build a scaled-up model of the Pyramid out of material whose density is (1 / 5) times the density of the material used for the miniature. He did a "back-of-the-envelope" calculation to check whether the model would be big enough.

If the mass (or weight) of the miniature and the scaled-up model are to be the same, how many inches in height will be the scaled-up Pyramid? Give your answer to two places of decimal. Herbert takes the underground train to work and uses an escalator at the railway station. If Herbert runs up 6 steps of the escalator, then it takes him 67.5 seconds to reach the top of the escalator. If he runs up 14 steps of the escalator, then it takes him only 47.5 seconds to reach the top.

How many seconds would it take Herbert to reach the top if he did not run up any steps of the escalator at all?