2+7= 9 72 / 9 = 8 8 * 2 = 16 8 * 7 = 56 16:56 Key: * = times / = divide

let the ratio vriable be a. Now ratio = 2:7 = 2a + 7a = 9a 9a = 72 thus, a = 72 / 9 = 8 thus, a = 8. Now the ratio will be, first share = 2a = 2 x 8 = 16 second share = 7a = 7x 8 = 56. Thus, 72 will be shared in ratios of 56 and 16