A, B and C invest in the ratio of 3 : 4: 5. The percentage of return on their investments are in the ratio of  6 : 5 : 4. Find the total earnings, If B earns Rs. 250 more than A :

A) Rs. 6000 B) Rs. 7250
C) Rs. 5000 D) None of these

Answer:   B) Rs. 7250


                                         A                  B                   C

investment                    3x                 4x                  5x

Rate of return              6y%              5y%                4y%

Return                           \inline \frac{18xy}{100}             \inline \frac{20xy}{100}             \inline \frac{20xy}{100}

               Total = (18+20+20) = \inline \frac{58xy}{100}

     B's earnings - A's earnings  = \inline \frac{2xy}{100} = 250

     Total earning = \inline \frac{58xy}{100} = 7250


If the cost price of a certain object doubles, then the loss gets tripled of what it was initially. The initial loss % was ?

A) 0 % B) 25 %
C) 75 % D) 50 %
Answer & Explanation Answer: D) 50 %


Let the cost price be x and selling price be y.
Loss = x – y

When the cost price doubles, the loss gets tripled.
So it becomes like this, 2x – y = 3(x-y)

Loss % =  =  = 50 %


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6 77

The profit earned by selling an article for Rs.753 is equal to the loss incurred when the same article is sold for Rs.455.What should be the sale price for making 50% profit ?

A) Rs.855 B) Rs.955
C) Rs.906 D) Rs.896
Answer & Explanation Answer: C) Rs.906


Let C.P =Rs. x

Then as given, (753 - x ) = (x - 455)  2x = 1208  x = 604

There fore S.P= 150% of 604 => Rs.  = Rs.906

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10 146

A women goes to market with Rs.500 to buy oranges.the prices of the oranges have decreased by 10% so he could buy 2kg more with the amount she had.What was the original price of the oranges ?

A) 22.77 B) 25.77
C) 27.77 D) 29.77
Answer & Explanation Answer: C) 27.77


If the price of the oranges decreases by 10%, the woman would save 10% of the money that is Rs.50 to buy the same amount as before.Now in Rs50 she can buy 2 kg more, therefore the current price of 1 kg of oranges is Rs25.Now this current price is after 10% reduction.

Therefore, the original price = 

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17 1063

A retailer buys product from a shopkeeper at discount of 40% on the list price (marked price) and sells them to the customer at a discount of 25% on the list price.What is his profit percentage ?

A) 10% B) 15%
C) 20% D) 25%
Answer & Explanation Answer: D) 25%


Let the list price be Rs.100. 

Therefore,the retailer is buying the products at Rs.60 and selling it to the customer at Rs.75, earning a profit of Rs.15.

Therefore, his percentage is  = 25%

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10 773

A shopkeeper sells one-third of his goods at a profit of 10%, another one-third at a profit of 20%, and the rest at a loss of 6%.What is his overall profit percentage ?

A) 6% B) 8%
C) 10% D) 12%
Answer & Explanation Answer: B) 8%


Let the shopkeeper buy 300g for Rs.300. Now he sells 100g for Rs.110, another 100g for Rs120, and the rest 100g for Rs94. 

Therefore, the total amount he receives = Rs.110 + Rs.120 + Rs.94 = 324. 

Therefore, the shopkeeper spends Rs.300 and gets back Rs.324.

Therefore, his profit percentage =  % = 8%

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3 800