Question

A man sold his cow for rs 7920 and gained 10% the cow was bought for

Answer 1

Answer:

the cow was bought for Rs.7200

Step-by-step explanation:

SP=7290

profit %=10

If he had a profit of 10% then:

SP- 10% of CP = CP

let CP=x

SP-10/100 * CP=CP

7920- x/10= x

(79200-x)/10= x

79200-x=10x

79200=11x

x=79200/11

x=7200

answer: the cow was bought for Rs.7200

Answer 2

Given : A man sold his cow for rs 7920 and gained 10%

To find : The price at which the cow was purchased.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to calculate the purchasing price of the cow)

Let, the cow's purchasing price = Rs. x

He gained 10% while selling the cow. Which means, he got a profit of 10% while selling the cow.

Now,

Profit amount will be :

= Purchasing price × 10%

= x × 10%

= x × 10/100

= Rs. x/10

Selling price will be :

= Purchasing price + Profit amount

= x + (x/10)

= (10x + x)/10

= Rs. 11x/10

According to the data mentioned in the question,

11x/10 = 7920

x = 7920 × 10/11

x = 7200

So, the purchasing price of the cow = Rs. x = Rs. 7200

(This will be considered as the final result.)

Hence, the cow was purchased at Rs. 7200