Question

ix) A motorist covers first 50 km of his journey at a speed of 40 km/hr and the remaining 70 km at a speed of 60 k /hr. Find:

a) The total time taken to complete the journey

b) His average speed

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Answer 1

Answer:

Step-by-step explanation:

Time=distance/time taken

Therefore total time taken=(distance covered at first time/first speed)+(distance covered at second time/second speed)

Therefore

=(50÷40)+(70÷60)

=(1.25)+(1.167)

=1.25+1.17

=2.42hrs

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