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Q:

The cost price of a college bag is 240% more than the profit obtained on it selling at Rs. 1540. What is the cost price of that college bag?

A) Rs. 1190	B) Rs. 1288
C) Rs. 1365	D) Rs. 1452

Answer & Explanation Answer: A) Rs. 1190

Explanation:

Let the profit be Rs. p

Then Cost price of the bag = 340p/100 = 3.4p

According to question,

3.4p + p = 1540

4.4p = 1540

p = 1540/4.4

p = 350

The profit p = Rs, 350

Hence, The cost price of the bag = 3.4p = 3.4 x 350 = Rs. 1190.

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Filed Under: Profit and Loss
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Q:

A group of five persons is formed from five boys and four girls. Find the probability that there are at least two girls in the group?

A) 110/129	B) 5/6
C) 121/126	D) 3/7

Answer & Explanation Answer: A) 110/129

Explanation:

Total number of possible ways =

$9 C_{5} = \frac{9 x 8 x 7 x 6 x 5}{5 x 4 x 3 x 2 x 1} = 126$

Number of favorable cases =

$4 C_{2} x 5 C_{3} + 4 C_{3} x 5 C_{2} + 4 C_{4} x 5 C_{1} \frac{4 x 3}{2 x 1} x \frac{5 x 4 x 3}{3 x 2 x 1} + \frac{4 x 3 x 2}{3 x 2 x 1} x \frac{5 x 4}{2 x 1} + 1 x 5 = 6 x 10 + 4 x 10 + 5 = 60 + 40 + 5 = 105$

Therefore, required probability = 105/126 = 5/6

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Filed Under: Probability
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Q:

Meghana alone would take 32 hours more to complete a job than both Meghana and Ganesh together. If Ganesh worked alone, he took 12 1/2 hours more to complete it than both Meghana and Ganesh worked together. What time would they take if both Meghana and Ganesh worked together?

A) 20 hrs	B) 18 hrs
C) 22 hrs	D) 20.5 hrs

Answer & Explanation Answer: A) 20 hrs

Explanation:

Time taken by both Meghana and Ganesh to work together is given by =

$\sqrt{t_{1} x t_{2}}$

Where

$t_{1} = 32 h r s t_{2} = 12 \frac{1}{2} h r s = \frac{25}{2} h r s$

Therefore, time took by both to work together =

$\sqrt{32 x \frac{25}{2}} = \sqrt{16 x 25} = 4 x 5 = 20 h r s$

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Business fluctuations refer to

A) the ups and downs in overall business	B) expansion is rapid
C) contraction is severe	D) None of the above

Answer & Explanation Answer: A) the ups and downs in overall business

Explanation:

Business fluctuations refer to the ups and downs in overall business activity measured by changes in national income, employment and the price level.

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Filed Under: Indian Economy
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Q:

Antipsychotic drugs have proved helpful in the treatment of

A) Epilepsy	B) Schizophrenia
C) Psoriasis	D) Eczema

Answer & Explanation Answer: B) Schizophrenia

Explanation:

Antipsychotic drugs have proved helpful in the treatment of schizophrenia and other psychotic disorders, inhibits dopamine, reduces delusions, hallucinations, thought disorganization.

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Filed Under: Biology
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Q:

Hot springs are heated geothermally by underlying

A) water	B) magma
C) mitula	D) None of the above

Answer & Explanation Answer: B) magma

Explanation:

Magma is molten rocks beneath the earth's crust. Hot springs are heated geothermally by underlying magma.

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Filed Under: Physics
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Q:

Alcohol has many sensations and effects like

A) loss of concentration	B) dizziness
C) nausea	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Alcohol has many sensations and effects like dizziness, nausea and loss of concentration.

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Filed Under: General Science
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Q:

Landowners often complain that hunters

A) do not get written permission to hunt	B) make too much noise
C) leave litter behind	D) All of the above

Answer & Explanation Answer: A) do not get written permission to hunt

Explanation:

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Filed Under: World Geography
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