Aman, Baman and Daman bought 1, 10 and 25 notebooks in Rs. 14, Rs.130 and Rs. 330 respectively from a stationery shop. In his sales with Aman and Daman, the shopkeeper made a profit of x percent and y percent respectively, where x = 2y. If the shopkeeper bought all the notebooks at the same price, then how much profit percentage did the shopkeeper make in his sales with Baman?
Aman, Baman and Daman bought 1, 10 and 25 notebooks in Rs. 14, Rs.130 and Rs. 330 respectively from a stationery shop. In his sales with Aman and Daman, the shopkeeper made a profit of x percent and y percent respectively, where x = 2y. If the shopkeeper bought all the notebooks at the same price, then how much profit percentage did the shopkeeper make in his sales with Baman?
Option 1 -
30
Option 2 -
38
Option 3 -
28
Option 4 -
40
-
1 Answer
-
Correct Option - 1
Detailed Solution:Aman
Baman
Daman
Number of notebook
1
10
25
Amount
14
130
300
Profit%
a percent
b percent
For Aman,
SP of 1 book = 14Rs.
CP of 1 book =
For Baman,
SP of 1 book = 12Rs.
CP of 1 book =
Price of all notebooks is same, therefore.
=
100 + 7y = 6a
100 = 12y – 7y; [x=2y]
5y = 100
y = 20
a = 40
CP each notebook = = 10Rs.
In his sales with Daman, he sold 10 books to her for Rs. 130
CP of 10books = Rs. 100
Profit percent =
=30percent
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