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Q:

The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity?

A) 2010	B) 2011
C) 2012	D) 2013

Answer & Explanation Answer: B) 2011

Explanation:

Suppose commodity X wil cost 40 paise more than Y after Z years. Then,

(4.20 + 0.40Z) - (6.30 + 0.15Z) = 0.40

=> 0.25Z = 0.40 + 2.10 => Z= 2.50/0.25 = 10

Therefore, X will cost 40 paise more than Y 10 years after 2001 . i.e in 2011

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Filed Under: Decimal Fractions

Q:

4.036 divided by 0.04 gives

A) 1.009	B) 10.09
C) 100.9	D) None of these

Answer & Explanation Answer: C) 100.9

Explanation:

4.036/0.04 = 4036/40 = 100.9

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Filed Under: Decimal Fractions

Q:

3 x 0.3 x 0.03 x 0.003 x 30 =?

A) 0.0000243	B) 0.000243
C) 0.00243	D) 0.0243

Answer & Explanation Answer: C) 0.00243

Explanation:

3 x 3 x 3 x 3 x 30 = 2430. Sum of decimal places = 6

Therefore, 3 x 0.3 x 0.03 x 0.003 x 30 = 0.002430 = 0.00243

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Filed Under: Decimal Fractions

Q:

138.009 + 341.981 - 146.305 = 123.6 + ?

A) 120.o85	B) 199.57
C) 295.05	D) None of these

Answer & Explanation Answer: D) None of these

Explanation:

Let 138.009 + 341.981 - 146.305 = 123.6 + z

Then, z = (138.09+341.981) - (146.305+123.6)= 479.99 - 269.905 = 210.085

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Filed Under: Decimal Fractions

Q:

What is the difference between the biggest and the smallest fraction among 2/3 , 3/4 , 4/5 and 5/6?

A) 1/6	B) 1/12
C) 1/20	D) 1/30

Answer & Explanation Answer: A) 1/6

Explanation:

Converting each of the given fractions into decimal form, we get

2/3 = 0.66, 3/4 = 0.75, 4/5 = 0.8, 5/6 = 0.833

Since 0.833>0.8>0.75>0.66

So, 5/6 > 4/5 > 3/4 > 2/3

Therefore, Required Difference = 5/6 - 2/3 = 1/6

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Filed Under: Decimal Fractions

Q:

Which of the following are in descending order of their value?

A) 5/9, 7/11, 8/15, 11/17	B) 5/9, 8/15, 11/17, 7/11
C) 11/17 , 7/11, 8/15, 5/9	D) 11/17, 7/11, 5/9, 8/15

Answer & Explanation Answer: D) 11/17, 7/11, 5/9, 8/15

Explanation:

Converting each of the given fractions into decimal form, we get

5/9 = 0.55, 7/11 = 0.63, 8/15 = 0.533, 11/17 = 0.647

Clearly, 0.647>0.63>0.55>0.533

so , 11/17 > 7/11 > 5/9 > 8/15

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Filed Under: Decimal Fractions

Q:

The fastest moving land snake in the world is the

Answer

Black Mamba

Workspace

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Subject: Animals and Birds

Q:

Which of the following is the National Aquatic animal of India?

A) Salt water crocodile	B) Sea Turtle
C) Dugong	D) Dolphin

Answer & Explanation Answer: D) Dolphin

Explanation:

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Filed Under: Animals and Birds

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