an amusement park line is moving about 4 feet every 15 minutes at this rate approximately how long will it take for a person at the back of the 50 Foot line to reach the front of the line?
4/15 = 50/x...4 ft to 15 min = 50 ft to x minutes this is a proportion, so we cross multiply (4)(x) = (15)(50) 4x = 750 x = 750/4 x = 187.5 minutes or 3 hrs and 7.5 minutes
or u can do it this way.. 15/4 = 3.75 ft per minute......50 * 3.75 = 187.5 minutes
