English

A Shopkeeper Bought Locks at the Rate of 8 Locks for Rs.520 and Sold Them at the Rate of 12 Locks for Rs.936. Calculate His Gain Or Loss Percent and the Number of Locks He Should Sell to Earn

Advertisements
Advertisements

Question

A shopkeeper bought locks at the rate of 8 locks for Rs.520 and sold them at the rate of 12 locks for Rs.936. Calculate his gain or loss percent and the number of locks he should sell to earn a net profit of Rs.520.

Sum
Advertisements

Solution

Cost of 8 locks = Rs.520
∴ C.P. of 1 lock
= Rs.`(520)/(8)`
= Rs.65
Selling price of 12 locks = Rs.936
∴ S.P. of 1 lock 
= Rs.`(936)/(12)`
= Rs.78
∵ S.P. > C.P.
Profit 
= S.P. - C.P.
= Rs.(78 - 65)
= Rs.13
Profit%
= `"Profit"/"C.P." xx 100`

= `(13)/(65) xx 100`
= 20%
Net profit = Rs.520
∴ Number of locks sold
= `"Total profit"/"profit per lock"`

= `(520)/(13)`
= 40.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Profit , Loss and Discount - Exercise 2.1

APPEARS IN

Frank Mathematics [English] Class 9 ICSE
Chapter 2 Profit , Loss and Discount
Exercise 2.1 | Q 9
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×