Following is the question from Habs 2010 paper.
Four friends, Alwyn, Bax, Coates and Delius have lunch together. Although each eats a differently priced snack, they share the bill equally. Yesterday, this resulted in Alwyn paying £1 less than the cost of his snack, Bax paying £3 more, Coates £4 less and Delius paid £4. What was the actual price of the snack that each friend ordered?
I know we can make 3 equations with 3 variables and substitute variables in equations to get the answer, but is there any more simple way of solving the same?
This on is fairly easy as we know they paid £4 each so total = £16. So D's snack was £4, C's = £8 A's=£5 and B's £1 - no need for anything too complex.