If 6 spiders make 6 webs in 6 days, then 1 spider will make 1 web in how many days?  Choose one.
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 1:6   Webs 6:1   1 x 6 x x = 6 x 1 x 6   =&gt; x= 6   Answer is 6
<result>B</result>
If 6 spiders make 6 webs in 6 days, then 1 spider will make 1 web in how many days?