29
Q:

A tank is 2/5 full. If 16 litres of water is added to the tank, it becomes 6/7 full. The capacity of the tank is:

A) 28 litres B) 32 litres
C) 35 litres D) 42 litres

Answer:   C) 35 litres



Explanation:

Let the capacity of the tank be x litres.

 

Then, (6x/7 - 2x/5) = 16 <=> 30x - 14x = 16*35 <=> x = 35

Q:

Solve the following :

60 ÷ 5 × 16 - 8 ÷ 2 ÷ 3 = ?

A) 3 B) 48
C) 1 D) 1/3
 
Answer & Explanation Answer: B) 48

Explanation:
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1 7
Q:

The number of solutions of the pair of linear equations x + 2y - 8 = 0 and 2x + 4y = 16 is

A) 0 B) 1
C) Infinitely many D) 2
 
Answer & Explanation Answer: A) 0

Explanation:
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2 17
Q:

Solve the following

78 ÷[-4 + -3 of 27 ÷ -18 ÷ -2]

A) -6 B) 13
C) 6 D) 15.6
 
Answer & Explanation Answer: A) -6

Explanation:
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0 9
Q:

If A = (-14 + 4) and B = 4 - 14, then AB = 

A) 0 B) -100
C) 100 D) -1
 
Answer & Explanation Answer: C) 100

Explanation:
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0 17
Q:

Expand : S + 23

A) S3+3S2+12S+8 B) S3+3S2+6S+8
C) S3+6S2+12S+8 D) S3+6S2+6S+8
 
Answer & Explanation Answer: C) S3+6S2+12S+8

Explanation:
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3 59
Q:

P + Q = 2(P-Q). If Q = 10, what is the value of P?

A) 10 B) 40
C) 20 D) 30
 
Answer & Explanation Answer: D) 30

Explanation:
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1 37
Q:

The value of tan(-405°)

A) 1 B) -1
C) 2 D) 0
 
Answer & Explanation Answer: B) -1

Explanation:
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0 13
Q:

There are 10 dozen apples, 15 dozen mangoes and 20 dozen oranges for selling. If 1/2, 1/3 and 1/4 of them are sold respectively. How many of the total fruits are remaining?

A) 420 B) 380
C) 180 D) 360
 
Answer & Explanation Answer: D) 360

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0 19