if 5 spiders make 5 webs in 5 days , then 1 spider will make 1 web in how many days ?
"let the required number days be x . less spiders , more days ( indirect proportion ) less webs , less days ( direct proportion ) spiders 1 : 5 webs 5 : 1 1 x 5 x x = 5 x 1 x 5 = > x = 5 answer is c"
multiply(1, 5)