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8 The price of a TV is Rs.13,000. The sales tax charged on it is at the rate of 12%.
Find the amount that Vinod will have to pay if he buys it.
Ans. C.P. = Rs.13,000 and S.T. rate = 12%
Let C.P. be Rs.100, then S.P. for purchaser= 100 + 12 = Rs.112
When C.P. is Rs.100, then S.P. = Rs.112
When C.P. is Rs.1, then S.P. =
When C.P. is Rs.13,000, then S.P.
= = Rs.14,560
9 The rate of sales tax on trousers is 10%. One can buy a pair of trousers at Rs 660.
What is the marked price?
Answer: x+ 10% of x= Rs 660
or x+ 1/10x= 660x 100
or,11x/10 = 660
11x= 6600/11 = Rs 600
10 The cost of an article was Rs.15,500, Rs.450 were spent on its repairs. If it sold for
a profit of 15%, find the selling price of the article.
Ans. Here, C.P. = Rs.15,500 and Repair cost = Rs.450
Therefore Total Cost Price = 15500 + 450 = Rs.15,950
Let C.P be Rs.100, then S.P. = 100 + 15
= Rs.115
When C.P. is Rs.100, then S.P. = Rs.115
When C.P. is Rs.1, then S.P. =
When C.P. is Rs.15950,
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