pens are bought at 12 for a ruppee and sold at 9 for a rupee find the gain
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Pens are bought at 12 for a rupee sold at 9 for a rupee. Find the gain or loss %.
Pens are bought of 12 for a rupee
Cost price(c.p) of the 12 pens=Re. 1
Cost price (c.p) of 1 pen=Rs.
12
1
Now,
Selling price(s.p) of 9 pens=Re. 1
Selling price(s.p) of 1 pen=Rs.
9
1
Gain=s.p−c.p
=Rs. [
9
1
−
12
1
]
=Rs. [
36
4−3
]=Rs.
36
1
Gain%=
c.p
Gain
×100=
12
1
36
1
×100=
36
12
×100
=
3
100
=33.33%.
Step-by-step explanation:
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