please solve this quickly
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Answer:
Average speed = 37.5 Km/hr
Step-by-step explanation:
Given
Total Distance = (10+40) Km = 50 Km
Speed to cover 10 km is 30 km/hr (s1)
Speed to cover 40 km is 50 km/hr (s2)
Average speed = 2 * s1 * s2/(s1+s2)
= 2 * 30 * 50/( 30 + 50) Km/hr
= 3000/80 Km/hr
= 300/8 Km/hr
= 150/4 Km/hr
= 75/2 Km/hr
= 37.5 Km/hr
Hence, the Average speed = 37.5 Km/hr
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