2. Rajan purchased 250 packets of blades at the rate of * 8 per packet. He sold 70%
of the packets at the rate of * 11 per packet and remaining packets at the rate of
9 per packet. Find his gain per cent.
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Total number of packets of blades = 250
Cost of each packet = ₹ 8
So,
C.P of 250 packets of blades
= 8 × 250 = ₹ 2000
70% of 250 packets of blades were sold at rate of ₹ 11 per packet.
70/100 × 250
=175
70 ×250=175
So,
175 packets of blades were sold at ₹ 11 per packet.
S.P = 11 × 175 = ₹ 1925
Remaining packets = 250 - 175 = 75
So,
75 ( remaining packets ) were sold at ₹ 9 per packet
S.P = 9 × 75 = ₹ 675
Total C.P = 1925 + 675 = ₹ 2600
Now,
C.P < S.P = Profit
Profit = S.P - C.P
Profit = 2600 - 2000 = ₹ 600
profit%=profit/c.p × 100
profit%=600/2000 × 100
=30%
profit%= c.p(profit×100)
profit%=2000/600 × 100
= 30%
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