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## Arithmetic : Level 1 Test -1

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Question 1 |

Richa earns 25 % more than Bharat, then how many percent less does Bharat earn than Richa?

25% | |

20% | |

30% | |

none |

Question 1 Explanation:

Let us suppose Bharatâ€˜s income is Rs. 100

therefore Richaâ€™s income will be 25% more than that of Bharatâ€™s Rs. 100, that is Rs. 125.

In the question, we need to calculate how many percent less is Bharatâ€™s earning in comparison to Richa.

The percentage asked is equivalent to= 25/125 x 100 = 20 % less.

therefore Richaâ€™s income will be 25% more than that of Bharatâ€™s Rs. 100, that is Rs. 125.

In the question, we need to calculate how many percent less is Bharatâ€™s earning in comparison to Richa.

The percentage asked is equivalent to= 25/125 x 100 = 20 % less.

Question 2 |

The price of the Samsung Laptops falls by 3%. By how much percent should the company increase its sales so as not to decrease its laptop revenue?

3.09% | |

5% | |

4% | |

none |

Question 2 Explanation:

Lets us suppose that Samsung sells 100 laptops for Rs. 100 each. Total revenue: 10000.

Now its price is reduced by 3%, that is to Rs. 97.

Hence, net revenue will become Rs. 9700.

In order to increase the revenue again to Rs. 10000, the company should increase its sales to:

(10000/97) = 103.09 laptops.

% increase in sales: 3.09%.

Now its price is reduced by 3%, that is to Rs. 97.

Hence, net revenue will become Rs. 9700.

In order to increase the revenue again to Rs. 10000, the company should increase its sales to:

(10000/97) = 103.09 laptops.

% increase in sales: 3.09%.

Question 3 |

The population of Pragpur is 18900. It increases at 5% compound rate per annum,then what was its population two years earlier?

17143 | |

17144 | |

17145 | |

17141 |

Question 3 Explanation:

The current population of Pragpur is 18900

So two years before at 5% rate it will be

18900=P (1 + r/100)

P =18900 x 20/21 x 20/21

P =17142.8=17143

So two years before at 5% rate it will be

18900=P (1 + r/100)

^{2}P =18900 x 20/21 x 20/21

P =17142.8=17143

Question 4 |

Megha buys a new music system worth Rs. 3400. After some time, it develops a snag and she sells it for Rs. 3000, what will be the loss %?

13% | |

12% | |

14% | |

none |

Question 4 Explanation:

Cost price is 3400

Selling price is 3000

Since the S.P. is less than the C.P. then there will be loss

So the loss is of Rs. 400.

So this loss is always on Cost price

% LossÂ = Â 400/3400 x 100 = 11.76%

So the answer is none of these .

Selling price is 3000

Since the S.P. is less than the C.P. then there will be loss

So the loss is of Rs. 400.

So this loss is always on Cost price

% LossÂ = Â 400/3400 x 100 = 11.76%

So the answer is none of these .

Question 5 |

Richa lost 6% by selling a laptop for Rs. 47000. What percent shall she gain by selling it for Rs. 57000?

14% | |

20% | |

18% | |

none |

Question 5 Explanation:

Selling Price = 47000

Loss = 6%

Let Cost Price = P

So Loss = Cost Price â€“ Selling Price

=(6/100) *P = P â€“ 47000

P= (47000 X 100) / 94 = Rs. 50000

New Selling Price = 57000

So the gain would be 57000 â€“ 50000 = 7000

Gain would be 7000/50000 x 100 = 14%

Loss = 6%

Let Cost Price = P

So Loss = Cost Price â€“ Selling Price

=(6/100) *P = P â€“ 47000

P= (47000 X 100) / 94 = Rs. 50000

New Selling Price = 57000

So the gain would be 57000 â€“ 50000 = 7000

Gain would be 7000/50000 x 100 = 14%

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