The difference between a discount of \(50 \ \%\) on \(Rs.1000\) and two successive discounts of \(20 \ \%\) and \(30 \ \%\) on the same amount will be?
\(Rs.50\)
\(Rs.55\)
\(Rs.60\)
\(Rs.65\)
Answer: (c) \(Rs.60\)Solution: \(50 \ \%\) discount on \(Rs.1000\), $$ = \frac{50}{100} \times 1000 = Rs.500 $$ overall discount of two successive discounts \(20 \ \%\) and \(30 \ \%\), $$ = x + y - \frac{xy}{100} $$ $$ = 20 + 30 - \frac{20 \times 30}{100} $$ $$ = 44 \ \% $$ now amount of \(44 \ \%\) discount on \(Rs.1000\), $$ = \frac{44}{100} \times 1000 = Rs.440 $$ then $$ Difference = 500 - 440 $$ $$ = Rs.60 $$
find the single discount equivalent to discounts \(20 \ \%\) and \(25 \ \%\), successively?
find the single discount equivalent to discounts \(10 \ \%\), \(20 \ \%\) and \(25 \ \%\), successively?
\(46 \ \%\)
\(48 \ \%\)
\(50 \ \%\)
\(52 \ \%\)
Answer: (a) \(46 \ \%\)Solution: Let marked price = \(Rs.100\)then selling price will be \(90 \ \%\) of \(80 \ \%\) of \(75 \ \%\) of \(Rs.100\), $$ = \frac{90}{100} \times \frac{80}{100} \times \frac{75}{100} \times 100 $$ $$ = Rs.54 $$ Hence single discount, $$ = (100 - 54) \ \% = 46 \ \% $$
A chair is offered for \(Rs.600\) with \(10 \ \%\) and \(20 \ \%\) discounts successively. If in addition, a discount of \(25 \ \%\) is offered on card payment, then find the price of the chair after discounts?
\(Rs.325\)
\(Rs.324\)
\(Rs.322\)
\(Rs.320\)
Answer: (b) \(Rs.324\)Solution: Price of the chair after discounts will be \(90 \ \%\) of \(80 \ \%\) of \(75 \ \%\) of \(Rs.600\), $$ = \frac{90}{100} \times \frac{80}{100} \times \frac{75}{100} \times 600 $$ $$ = Rs.324 $$
find the single discount equivalent to discounts \(5 \ \%\) \(10 \ \%\), \(20 \ \%\) and \(25 \ \%\), successively?
\(45.6 \ \%\)
\(46.8 \ \%\)
\(48.7 \ \%\)
\(49.6 \ \%\)
Answer: (c) \(48.7 \ \%\)Solution: Let marked price = \(Rs.100\)then selling price will be \(95 \ \%\) of \(90 \ \%\) of \(80 \ \%\) of \(75 \ \%\) of \(Rs.100\), $$ = \frac{95}{100} \times \frac{90}{100} \times \frac{80}{100} \times \frac{75}{100} \times 100 $$ $$ = Rs.51.3 $$ Hence single discount, $$ = (100 - 51.3) \ \% = 48.7 \ \% $$
A shopkeeper sold two mobiles for \(Rs.7500\) each, gaining \(10 \ \%\) on first mobile and losing \(5 \ \%\) on second mobile. Find his net profit or loss amount?
\(Rs.287.09\)
\(Rs.282.03\)
\(Rs.288.06\)
\(Rs.280.05\)
Answer: (a) \(Rs.287.09\)Solution: selling price of two mobiles = \(Rs.15000\)cost price of two mobiles, $$ = \frac{100}{110} \times 7500 + \frac{100}{95} \times 7500 $$ $$ = 14712.91 \ Rs. $$ then net profit = \(15000 - 14712.91\) = \(287.09 \ Rs.\)
A seller sold an article at \(5 \ \%\) profit. If he had sold the article at \(10 \ \%\) profit, he would have recieved \(Rs.500\) more. Find the selling price of the article?
\(Rs.10,000\)
\(Rs.10,500\)
\(Rs.10,800\)
\(Rs.10,900\)
Answer: (b) \(Rs.10,500\)Solution: Let cost price of the article = \(Rs.K\), then $$ k + k \times \frac{10}{100} = k + k \times \frac{5}{100} + 500 $$ $$ \frac{5 \ k}{100} = 500 $$ $$ k = 10,000 \ Rs. $$ Hence, selling price of the article, $$ = 10,000 + 10,000 \times \frac{5}{100} $$ $$ = Rs.10,500 $$
A man sold two chairs for \(Rs.1500\) each, gaining \(25 \ \%\) on first chair and losing \(25 \ \%\) on second chair. Find his net profit or loss amount?
\(Rs.200\)
\(Rs.220\)
\(Rs.250\)
\(Rs.260\)
Answer: (a) \(Rs.200\)Solution: selling price of two chairs = \(Rs.3000\)cost price of two chairs, $$ = \frac{100}{125} \times 1500 + \frac{100}{75} \times 1500 $$ $$ = 3200 \ Rs. $$ then net loss = \(3200 - 3000\) = \(200 \ Rs.\)
x sells a laptop to y at a profit of \(25 \ \%\) and y sells the laptop to z at a profit of \(10 \ \%\). If z pays \(Rs.20,000\), then what did x pay for laptop?
\(Rs.12545.45\)
\(Rs.14545.45\)
\(Rs.15545.55\)
\(Rs.16545.55\)
Answer: (b) \(Rs.14545.45\)Solution: the amount x paid for the laptop is \(110 \ \%\) of \(125 \ \%\) of x, $$ \frac{110}{100} \times \frac{125}{100} \times x = 20,000 $$ $$ \frac{55 \ x}{40} = 20,000 $$ $$ x = 14545.45 \ Rs. $$
A girl purchased a book at \(Rs.250\) and sold it at \(Rs.150\). Find the loss percent of the girl?