Amodel train has a scale of 1 in : 4 ft. if the real train is 20 ft tall, then how tall is the model train? a. 16 in b. 5 in c. 80 in d. 1 in

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.