If Ahmed purchases a Watch for Rs 600 and pays 15% sales tax, the total amount spent on purchase is?
Correct answer: D. 690
- A. 660
- B. 670
- C. 680
- D. 690
- E. 700
Explanation
The sales tax is 15% of 600 Rs: 0.15 x 600 Rs = 90 Rs. Adding the tax gives 600 Rs + 90 Rs = 690 Rs. The likely mistake is choosing 660 Rs by adding only 10% instead of 15%.
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About Percentages
Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
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