Answer:
24 hours
Step-by-step explanation:
Distance from warehouse (70, 40) to store (70, - 20)
x1 = 70 ; y1 = 40 ; x2 = 70 ; y2 = - 20
D = sqrt((x2-x1)² + (y2 - y1)²)
D = sqrt((70 - 70) + (-20 - 40)²)
D = sqrt(3600)
D = 60
Each unit grid represents 20 miles
The distance from store to ware house :
60 * 20 = 1200 miles
Speed of truck = 50 mph
Time taken = distance / speed
Time taken = 1200 / 50
Time taken = 24 hours