Mr Ravi spent 1/4 ofhis money on a shirt and 5/6 of his remaining money on a badminton racket, a pair of shorts and 2 pairs of shoes. The badminton racket cost 4 times as much as a pair of shoes while the pair of shorts cost 4 times as much as a pair of shoes while the pair of shorts cost 2/3 as much as a pair of shoes. The shirt cost $84.30 more than the pair of shorts.
(a) What fraction of his money was spent on the pair of shorts?
(b) How much money did Mr Ravi spend altogether?