if 3 spiders make 3 webs in 3 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 : 3 webs 3 : 1 1 x 3 x x = 3 x 1 x 3 = > x = 3 answer is e"
multiply(1, 3)