If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days? Choose the correct choice from the following.
A) 7	B) 6	C) 5	D) 4	E) 3
Let the required number days be x.   Less spiders, More days (Indirect Proportion)   Less webs, Less days (Direct Proportion)   spiders 1:7   Webs 7:1   1 x 7 x x = 7 x 1 x 7   =&gt; x= 7   7nswer is 7
<result>A</result>
If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?