6:18:30 = 1:3:5 [dividing each number by 6 ]
sum of the ratio = 1+3+5 [ martin share = 1part; ralph share = 3parts;
brain share = 5 parts]
= 9 -------------------(1)
dividing 288 among 3 members according to their ratios
9 parts = 288 [ number of parts = amount which is distributed ]
1part = 288/9
1part = 32----------------------------(2)
martin share = 1part = 1 * 32 = 32
ralph share = 3parts = 3*32 = 96
brain share = 5parts = 5 *32 = 160