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 2 of 3.
Siddu k said:
8 years ago
@Radhika.
Super explanation.
Super explanation.
Anonymous said:
9 years ago
7spiders * 1spider * x days = 7webs * 1web * 7days.
Spiders on the Left * days = webs on the right * days.
=> 7 * 1 * x = 7 * 1 * 7.
7x = 49,
7x/7 = 49/7,
x = 7days.
Spiders on the Left * days = webs on the right * days.
=> 7 * 1 * x = 7 * 1 * 7.
7x = 49,
7x/7 = 49/7,
x = 7days.
Pawan goyal said:
1 decade ago
hw that problem has been solved i don't understand the way it has been solve out...plz tell me the way it has been solved out
Anomy said:
9 years ago
To get 7 then I think it needs to be explained better that each spider is working on their own web.
Otherwise, it takes 1 team of 7 spiders 7 days to make 7 webs. If you have less on your team you will make fewer webs or it will take longer to make the same number of webs.
Otherwise, it takes 1 team of 7 spiders 7 days to make 7 webs. If you have less on your team you will make fewer webs or it will take longer to make the same number of webs.
Kilevu said:
9 years ago
Nice explanations, I get it now. Thanks to all.
Kasinath @Hyd said:
1 decade ago
7 Spiders ... 7 Days.
=> 1 spider =7*7= 49 days--- Eq(1).
Remaining one is 7 Webs--- Eq(2).
But, question is about 1 web. So, when we Divide Eqn(1) by Eqn(2) we get 1 web.
=>1 spider =49 days/7 webs = 7 days/1web
=>1 spider 1 web = 7 days
=> 1 spider =7*7= 49 days--- Eq(1).
Remaining one is 7 Webs--- Eq(2).
But, question is about 1 web. So, when we Divide Eqn(1) by Eqn(2) we get 1 web.
=>1 spider =49 days/7 webs = 7 days/1web
=>1 spider 1 web = 7 days
Deepak verma said:
1 decade ago
Its simple formula:-
(no. of spider*no.of days)/no.of webs
So according this:
7*7/7 = 1*x/1.
Than x = 7.
(no. of spider*no.of days)/no.of webs
So according this:
7*7/7 = 1*x/1.
Than x = 7.
Sudheer said:
1 decade ago
Superb radhika. Thank you.
Prabhu said:
1 decade ago
@RADHIKA
What an explanation great thank you.
What an explanation great thank you.
Anjani said:
1 decade ago
I didn't understand the solution please explain once.
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