Question

A man sells a watch for rs 690 making a profit of rs 130. Find the cost price. Please give step by step explanation.​

Answer 1

Given :-

• Selling price of a watch = Rs. 690
• Profit = Rs. 130

To find :-

• Cost price = ?

Solution :-

Cost price = Selling price - Profit (rs)

$: \implies\bold{690 - 130}$

$: \implies\bold{rs. \: 560}$

$\boxed{\sf\red{Cost~price~=~Rs.~560}}$

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Know more :-

Some related formulae --

• Profit = S.P - C.P
• Loss = CP - SP
• $\sf{P\% = \dfrac{P}{CP} \times 100}$

• $\sf{L\% = \dfrac{L}{CP} \times 100}$