A shopkeeper sells a dozen pair of socks whose marked price is Rs. 600 at 20% discount. How many pairs of socks can be bought for Rs. 320?
- A9
- B10
- C8
- D12
Solution & Step-by-step Explanation
Marked price (MP) for 1 dozen (12 pairs) of socks = Rs. 600.
Discount rate = 20%
Selling price (SP) for 12 pairs of socks:
SP=600×(1−
100
20
)=600×
100
80
=Rs. 480
Cost of 12 pairs of socks = Rs. 480.
Therefore, the selling price of 1 pair of socks is:
SP of 1 pair=
12
480
=Rs. 40
The number of pairs of socks that can be bought for Rs. 320 is:
Number of pairs=
40
320
=8
Discount rate = 20%
Selling price (SP) for 12 pairs of socks:
SP=600×(1−
100
20
)=600×
100
80
=Rs. 480
Cost of 12 pairs of socks = Rs. 480.
Therefore, the selling price of 1 pair of socks is:
SP of 1 pair=
12
480
=Rs. 40
The number of pairs of socks that can be bought for Rs. 320 is:
Number of pairs=
40
320
=8