In Harry's attic there are. Three spider webs.the first web is twice as larger as the second web. The third web is 3 inches larger than the first web.The combined width of the three webs is 1 foot and 6 inches.How many long is each web?
Let x = #2 web
and 2x = #1 web
and 2x+3 = #3 web.
Then x + 2x + 2x+3 = 18 and solve for x, 2x and 2x+3.