Amanufacturer inspects 400 personal video players that 397 of the have no defects. the manufacturer sent a shipment of 1,500 video playes to a distributor. predict the number of players in the shipment that are likely to have no defects

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.