NTSE Stage-2 (National-Level) Mental-Ability: Questions 1 of 440
Appeared in Year: 2013
Question MCQ▾
Two candles are of different lengths and thicknesses. The short and the long ones can burn respectively for 3.5 hour and 5 hour. After burning for 2 hour, the lengths of the candles become equal in length. What fraction of the long candle՚s height was the short candle initially?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Answer
a.
Explanation
Here, let lengths be for short and for long candle.
Now, in 3.5 h length burnt of short candle is
So, in 2 h length burnt =
Same, in 5 h length burnt of long candle is
So, in 2 h length burnt =
Now, as per question,
After burning for 2 hour, the lengths of the candles become equal in length.
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