Total pocket money of three friends = 3 × 80 = Rs 240 Money spent by A = x Money spent by B = 2 xMoney spent by C = 3x Average of unspent money = Rs 60 Total unspent money = Rs 180 Spent money = 240 -180 = Rs 60 Money spent by A, B and C = 60 x+2x+3x=60 6x=60 x=10 Money spent by A = Rs 10