Aptitude - Clock - Discussion
Discussion Forum : Clock - General Questions (Q.No. 7)
7.
At what time between 5.30 and 6 will the hands of a clock be at right angles?
Answer: Option
Explanation:
At 5 o'clock, the hands are 25 min. spaces apart.
To be at right angles and that too between 5.30 and 6, the minute hand has to gain (25 + 15) = 40 min. spaces.
55 min. spaces are gained in 60 min.
| 40 min. spaces are gained in |  |
60 | x 40 |  min |
= | 43 | 7 | min. |
| 55 | 11 |
 Required time = 43 |
7 | min. past 5. |
| 11 |
Discussion:
76 comments Page 6 of 8.
Krish said:
1 decade ago
I have the same doubt as @Margaret said. Please anyone explain it.
Ashu said:
8 years ago
How can you get 11/2 in the formula?
Can anyone help me? Please.
Can anyone help me? Please.
Chandra shekar said:
1 decade ago
How did you get the fraction 60/55 in the above the calculation ?
Ragav said:
7 years ago
Why we can't use 30H - 5.5H = 90 formula?
30(11/2) - 5.5H = 90.
30(11/2) - 5.5H = 90.
(1)
Arpita Saxena said:
8 years ago
I didn"t understand this solution. Can anyone please explain?
Vijaya said:
8 years ago
I don't understand how, 15 m gain? please anyone explain it.
Ajay said:
1 decade ago
Yes @shree I have same prob that how we use theta value.
Aaaa said:
1 decade ago
If 40 past 5 makes 90 degrees why isn't that the answer?
Yuvrajsinh said:
9 years ago
Friends please help me, I don't know this chapter.
Bala said:
1 decade ago
How (25+15) is written? Plse explain it clearly.
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