Mathematics 2023 WAEC Past Question (Theory)

a. A car travels a distance of 112 km at an average speed of 70 km/h. it then travels a further 60 km at an average speed of 50 km/h. Calculate, for the entire journey, the total time taken. b. if x/y= 2 and y/z= 3, find the value of x+y/y+z