1) The length and breadth of a rectangle are in the ratio 3 : 1. If the breadth is 7 cm, then the length of the rectangle is? 2) The ratio of 1 hour to 300 seconds is? 3) I have a box which has 3 green, 9 blue, 4 yellow, 8 orange coloured cubes in it (a) What is the ratio of orange to yellow cubes? (b) What is the ratio of green to blue cubes? (c) How many different ratios can be formed, when you compare each colour to any one of the other colours?