running at a constant speed, andrea covers 15 miles in 2 and 2.5 hours. at this sped how many minutes ill it tae her to run 2 miles
+130511 We can set this up as a proprtion and solve
(2+2/5)hrs/ 15miles = x hrs / 2miles ...... cross-multiply
2(2 + 2/5) = 15x ..........divide both sides by 15
2(2 + 2/5)/15 = x = .32 hrs ..... and to find the minutes, multiply this by 60....so.... .32(60) = 19.2 minutes to run 2 miles
+130511 We can set this up as a proprtion and solve
(2+2/5)hrs/ 15miles = x hrs / 2miles ...... cross-multiply
2(2 + 2/5) = 15x ..........divide both sides by 15
2(2 + 2/5)/15 = x = .32 hrs ..... and to find the minutes, multiply this by 60....so.... .32(60) = 19.2 minutes to run 2 miles
