A tailor had a number of shirt pieces to cut from a roll of fabric. He cut each roll of equal length into 10 pieces. He cut at the rate of 45 cuts a minute. How many rolls would be cut in 24 minutes ?

Question: A tailor had a number of shirt pieces to cut from a roll of fabric. He cut each roll of equal length into 10 pieces. He cut at the rate of 45 cuts a minute. How many rolls would be cut in 24 minutes ?
[A].

32 rolls

[B].

54 rolls

[C].

108 rolls

[D].

120 rolls

Answer: Option D

Explanation:

Number of cuts made to cut a roll into 10 pieces = 9.

Therefore Required number of rolls = (45 x 24)/9 = 120.

A number consists of two digits whose sum is 11. If 27 is added to the number, then the digits change their places. What is the number ?

Question: A number consists of two digits whose sum is 11. If 27 is added to the number, then the digits change their places. What is the number ?
[A].

47

[B].

65

[C].

83

[D].

92

Answer: Option A

Explanation:

Let the ten’s digit be x. Then, unit’s digit = (11 – x).

So, number = 10x + (11 – x) = 9x + 11.

Therefore (9x + 11) + 27 = 10 (11 – x) + x 9x + 38 = 110 – 9x 18x = 72 x = 4.

Thus, ten’s digit = 4 and unit’s digit = 7.

Hence, required number = 47.

In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.

Question: In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.
[A].

0.5

[B].

1

[C].

5

[D].

20

Answer: Option C

Explanation:

No answer description available for this question.