Total fund collected by 20 students = 20 x 10,000 = 2,00,000 Investment in riskless government securities = 200000 × 10050​ = 100000 Investment in equities = 200000 -100000 = 100000 Gain by equities = 100000 × 1001​ = 1000 Gain by riskless government securities = 100000 × 1007.8​ = 7800 Total gain = 1000 + 7800 = 8800 gain/students = 208800​ = 440 gain% = 10000440​×100 = 4.4%