Question

by selling a table for rs.1320 a trader gains 10 percent.. find the CP of the table

Answer 1

Selling price of the table = sp = Rs1320
gain = g= 10%
Let the cost price of the table= cp
Selling price =cost price ×(100+g)/100
1320 = cp×(100+10)/100
1320= cp×110/100

(1320×100)/110= cp

After cancellation
1200=cp
Therefore
Cost price of the table= cp = Rs1200

Answer 2

Answer:

$p = profit \: upon \: cp \times 100\% \\ profit = 10\% \\ sp = cp \times (100 + 10) \\ 1320 = cp \times 100 \div 110 = cp \\ 1200$

hope it's help full to u