# CBSE Class 8 Answered

**Kavitha goes to purchase a bike which is priced at Rs.35,640 including 10% sales tax. However the actual rate of sales tax at the time of purchase is 7%. Find the extra profit made by the shopkeeper if he still charges the original listed price.**

Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM

Expert Answer

When sales tax is charged at 10%, for a basic price of Rs.100 the price including sales tax becomes:

Rs 100 + Rs 10 = Rs 110

Thus for Rs 110 price + sales tax, the basic price is Rs. 100.

Therefore, for Rs 35640 price + sales tax, the basic price is

=

For Rs. 100 basic price, the price plus 7% sales tax is Rs. 107

Therefore, for Rs. 32400 basic price, the price plus 7% sales tax is

=

Extra Profit made = Original list price - price with 7% sales tax

= Rs (35640 - 34668) = Rs. 972

Answered by | 04 Jun, 2014, 15:23: PM

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