Respuesta :
Expressing the values as improper fractions for easy calculations:
Rate of filling = 5/4 feet per hour
Depth to be reached = 7/2 feet
Time taken = depth / rate
Time = 7/2 x 4/5
Time = 14/5 hours
As a mixed number:
Time = 2 4/5 hours
Rate of filling = 5/4 feet per hour
Depth to be reached = 7/2 feet
Time taken = depth / rate
Time = 7/2 x 4/5
Time = 14/5 hours
As a mixed number:
Time = 2 4/5 hours