Question

Bookseller sells a book on 10 percent profit if he purchase this book on 4 percent loss and sells 6 more

Answer 1

Ans: Rs.150

Let cost price of the book
=
x
=
x

gain = 10%
=> selling price
=
110
x
100
=
110
x
100



If he had bought it at 4% less and sold it for Rs 6 more,
cost price
=
96
x
100
=
96
x
100

selling price
=
110
x
100
+
6
=
110
x
100
+
6

gain=
(
110
x
100
+
6
)
−
96
x
100
=
14
x
100
+
6
(
110
x
100
+
6
)
−
96
x
100
=
14
x
100
+
6


Now, the gain
=
18
3
4
%
=
75
4
%
=
18
3
4
%
=
75
4
%
.
Therefore,

14
x
100
+
6
=
96
x
100
×
75
400
14
x
100
+
6
=
96
x
4
×
3
400
14
x
+
600
=
96
x
4
×
3
4
14
x
+
600
=
6
x
×
3
14
x
+
600
=
18
x
4
x
=
600
x
=
150