Question

a duck flew at 18km per hour for first 3hour , then at 15 km per hours for next 2 hours . With what average speed did the duck fly​

Answer 1

Answer:

42 km per hour as the ducks average.

Step-by-step explanation:

18 km = 3 hours

18 x 3 = 54 km for 3 hours

15 km = 2 hours

15 x 2 = 30 km for 2 hours

Average = 30 + 54 = 84/2 = 42