SOLUTION: You walk 110 yards due south, then 140 yards due west, and then 50 yards due north. How far are you from your starting point? A new concrete floor will be 15 feet long, 18 f

Algebra ->  Length-and-distance -> SOLUTION: You walk 110 yards due south, then 140 yards due west, and then 50 yards due north. How far are you from your starting point? A new concrete floor will be 15 feet long, 18 f      Log On


   



Question 536851: You walk 110 yards due south, then 140 yards due west, and then 50 yards due north. How far are you from your starting point?


A new concrete floor will be 15 feet long, 18 feet wide, and 6 inches thick. Concrete is measured by the cubic yard. One sack of dry cement mix costs $6.80, and it takes three sacks to mix up 1 cubic yard of concrete. How much will it cost to buy the cement?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The volume to be filled is +15%2A18%2A%281%2F2%29+=+135+ ft3
A cubic yard is +3%2A3%2A3+=+27+ ft3
+135+ ft3 x +1+%2F+27+ yd3 / ft3 = +5+ yd3
3 sacks = 1 yd3
+5+ yd3 x +3+ sacks / yd3 = +15+ sacks
+6.8+ dollars/sack x +15+ sacks = +102+
The cement will cost $102