Question – 167

167. A man invested Rs 3600 in ratio 7 : 6 : 5 in three schemes I, II and III which offers 10% p.a. at CI, 12% p.a. at SIand r% p.a. at CI respectively. If at the end of 2 years, he received total interest of Rs 1832, then Find the valueof ‘r’?