Aptitude - Percentage - Discussion

Easily,

He bought goods for Rs.6650 and he got 6%refund and he pays 10% tax from the cost of the goods.
So, 10% - 6% = 4% (i.e he needs to pay 4% of 6650).

4% of 6650 = 226( this much he need to pay in addition to the cost 6650)
Therefore, 6650 + 226 = 6876.

Easy way :

Here as give in problem,

He buys the goods worth Rs..6650.
He gets rebate of 6%.
i.e discount of 6%.

So now 6% of 6650rs = (6*6650)/100.
= 399 rs..(discounted amount).

After removing the discount he has to pay :
6650 - 399 = 6251 rs.

As given, he will pay a tax of 10%,
i.e sales tax = 10% of 6251.
= (10*6251)/100,
= 625.10 rs.

So now, the amount to be paid = 6252 + 625.10.
= 6876.10 rs.

6650 * 6 % = 399.
Q is after getting a rebate it means we have to add a rebate.
6650 + 399 = 7049.
10% of 7049 = 704.9.

He pays sales tax of 10 % means,
7049 + 704.9 = 7753.9,
I think this is right.

If he got an item of 6650 then 6% i.e. 6/100= 3/50.
This means in 50 units 3 units less in 50 as rebate = 47/50 rebate.
Same way if 10% sales tax then 1/10 means 1 unit more paid in 10 = 11/10.
Therefore, 6650 * 47/50 * 11/10 = 6876.1.

It is easy:

Total Amount Rajeev buys = 6650,
Rebate=6%,
So, 6%of 6560 = 399.
•Total - Rebate => 6560 - 399 = 6251,
10%=6251 of 10% =>625.10,
Add the tax amt + total,
Then,
6251 + 625.10 = 6876.1.