Question

By selling a table for ₹330,a trader gains10%.find the cost price of the table.​

Answer 1

Answer:

Let us assume that CP of the table is INR 100 (as it is not given)

Then profit made = 10 %.

So, SP should in fact be 10% of INR 100 = INR 10.

Now if CP is 100 and profit is INR 10, then SP will be INR 110.

But we are given SP is INR 330 and profit remaining the same is 10 %,

Then CP =?

SP Profit CP

330 10%  X

110 10%  100

Now, we just need to focus on SP and CP, by ratio we get,

330  X

110  100

SP:CP = 330 :X ::110:100

Now it becomes easy to find the value of X using ratio property..

Solving this, we get 330/x = 110/100

Or cross multiplying we get,  x = 330 X 100 / 110

X = 30 X 10 = 300.

So if the SP is 330 and profit made is 10% then the CP will be INR 300.

Answer 2

Answer:

Let us assume that CP of the table is INR 100 ( for it is not given)

Profit made = 10 %.

So, SP should in fact be 10% of INR 100 = INR 10.

Now if CP is 100 and profit is INR 10, then SP will be INR 110.

But we are given SP is INR 330 and profit remaining the same is 10 %,

Then CP =?

SP Profit CP

330 10%  X

110 10%  100

Now, we just need to focus on SP and CP, by ratio we get,

330  X

110  100

SP:CP = 330 :X ::110:100

Now it becomes easy to find the value of X using ratio property..

We get 330/x = 110/100

Or cross multiplying we get,  x = 330 X 100 / 110

X = 30 X 10 = 300.

So if the SP is 330 and profit made is 10% then the CP will be INR 300.

Step-by-step explanation:

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