Question

a bus travels 54 km with a speed of 36km/h. calculate

Answer 1

Answer:

1.5 hour

Explanation:

Type 1 :

Suppose that d = distance, v = speed, t = time

We know that d = vt

Therefore, t = d/v

            or, t =  $\frac{54 km}{36 km/h}$[ d = 54 km, v = 36 km/h]

           So, t = 1.5 h

Type 2 : (Unitary Method)

 The bus travels 36 km in 1 hour

∴The bus travels 1 km in  $\frac{1}{36}$ hour

∴The bus travels 54 km in $\frac{54}{36}$ hour

                                          = 1.5 hour