In an old fort, If 15 spiders make 15 webs in 15 days, then 1 spider will make 1 web in how many days?
Choose the correct choice from the following choices.
A) 1
B) 15/2
C) 15
D) 225
E) None of these
Explanation :   Solution: Let the required number of days be x.. Then,   Less spiders, more days (IP)   Less webs, less days (DP)   .'. Spiders 1 : 15   } : : 15 : x   webs 15 : 1   .'. 1*15*x = 15*1*15 &lt;=&gt; x = 15.   Answer : 15
<result>C</result>
In an old fort, If 15 spiders make 15 webs in 15 days, then 1 spider will make 1 web in how many days?