C.P. of 150 calculators=150×Rs.250 =Rs‌.37,500 Other expenses =Rs‌.2500 Since, net C.P. of 150 calculators =37500+2500 =Rs‌.40,000 Hence, net C.P. of one calculator=
40,000
150
‌Rs.
800
3
S.P. of one calculator =320−
5
100
×320 =Rs‌.304 Profit for one calculator =304−