What's the answer to this question?
A candle is 15cms long; it's shadow is 45cms longer. How many times is the shadow longer than the candle?
I know this is a question to find out if a person has 'brain lesion'. I wonder why the answer is not 3 times?
Thanks,
2006-10-23 05:27:53 · 3 answers · asked by putester 2 in Science & Mathematics ➔ Other - Science
A candle is 15cms long; it's shadow is 45cms longer
this is the same as:
A candle is 15cms long; it's shadow is 45cms longer than the candle itself.
which is the same as:
candle is 15cms long; it's shadow is 60cms long
the shadow is FOUR times as long as the candle.
The key is that the shadows length is given as "longer" not as "long". A careless reader might read it as "45 cms long" and calculate the shadow is 3 times as long as the candle.
2006-10-23 05:36:58 · answer #1 · answered by Carbon-based 5 · 0⤊ 0⤋
The shadow is 45 cms LONGER than the candle. Therefore, you must ADD 45 to 15, getting 60 cms and an answer that is NOT 3 times longer, but 4 times longer.
2006-10-23 12:36:05 · answer #2 · answered by Yahzmin ♥♥ 4ever 7 · 0⤊ 0⤋
the answer is 3 times.
What is the answer supposed to be?
My bad, the person ahead of me got it right while I was typing. I guess I didn't read carefully.
2006-10-23 12:36:07 · answer #3 · answered by JoeIQ 4 · 0⤊ 0⤋