Question

Disha cycles to her school ct an average speed of 12 km/hr. It takes her 20 minutes
to reach the school. If she wants to reach her school in 15 minutes, what should be
her average speed?

IN DIRECT AND INVERSE​

Answer 1

$\huge\star\underline\texttt\blue{HELLO}$

initial time = 20min = 1/3 hr

distance of her school = speed×time = 12×1/3 = 4km.

if she wants to reach school in 15min or 1/4hr

than she will have to be in speed = distance / time = 4/1/4 = 16km/hr

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Answer 2

Answer:

16 km per hour

Step-by-step explanation:

Distance = Speed x Time

Distance = 12 x (20/60) = 4 Km

Average speed for 4km in 15 minutes

Speed = Distance / Time

           = 4 / (15/60)

           = 16 km/hr