A marching band takes 5 steps forward and 3 steps back during the Republic Day parade. According to this, since the wind in this marching band took a total of 460 steps, how many steps did he go from the starting point? solution please

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.