Aptitude - Chain Rule - Discussion
Discussion Forum : Chain Rule - General Questions (Q.No. 10)
10.
If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?
Answer: Option
Explanation:
Let the required number days be x.
Less spiders, More days (Indirect Proportion)
Less webs, Less days (Direct Proportion)
| Spiders | 1 | : | 7 |  |
:: 7 : x |
| Webs | 7 | : | 1 |
1 x 7 x x = 7 x 1 x 7
x = 7.
Discussion:
22 comments Page 3 of 3.
Mehar said:
1 decade ago
When ever you found these kind of problems, come from the back.
Means if 7spiders 7weds in 7days so,
1 spider work ==(7*7)/7=7;
one person work==days*work done/ number of workers;
Means if 7spiders 7weds in 7days so,
1 spider work ==(7*7)/7=7;
one person work==days*work done/ number of workers;
Chanti said:
1 decade ago
I didn't understood how the ratio will be considered. As follows
1*7*x=7*1*7
So please give the brief description.
1*7*x=7*1*7
So please give the brief description.
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