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there were 6000 people at a football match.
10% of them left 2 minutes before the end of the game to avoid traffic.
50% of the rest left as soon as the match ended.
a how many people in total had left the football match when it ended?

does anyone know how to answer this

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.