Question

Anyone who knows the answer to this question please help. I want both answer and solution:)
Question 14

Answer 1

Answer:

D1 = 40 km

S1 = 80 km/hr

T1 = 40/80 = 1/2 hrs

D2 = 40 km

S2 = 40 km/hr

T2 = 40/40 = 1 hr

Total distance = 40 + 40 = 80 km

Totl time = 1/2 + 1 = 3/2 = 1.5 hrs

Average Speed = $\sf {\frac {Total\:distance}{Total\:time}}$

=》 $\sf {\frac {80}{1.5}}$

=》 $\bf {53.34\:km/hr}$

=》 In approx - 53 km/hr