Question

By selling a sofa for Rs 19800, a person earns 10% profit. What is its cost
price ?​

Answer 1

Answer:

SP=19800, Gain%(Profit)=10%

Step-by-step explanation:

CP=100/100+Gain% ×SP

=100/100+10% × 19800

=100/110 ×19800

=100/11 × 1980

= Rs 18000

Answer 2

The cost price of sofa is ₹ 18000/-

Given:

• Selling price of sofa is Rs 19800.
• Profit 10%

To find:

• Find the cost price of sofa.

Solution:

Formula /concept to be used:

Profit in percent =(SP-CP)/CP×100

Step 1:

Write the given terms.

Profit = 10%

SP= 19800/-

Step 2:

Put all the terms in formula and find CP

$10 = \frac{19800 - CP}{CP} \times 100$

or

$10 CP =100 (19800 - CP )$

or

$CP = 198000 - 10CP$

or

$11CP = 198000$

or

$CP = \frac{198000}{11}$

or

$\bf CP = 18000$

Thus,

Cost price of sofa is Rs. 18000/-

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