Question

Natasha travelled 36km at a speed of 7km/h. grover travelled 44km at a speed of 10km/hr. a) whose journey was quickest ? b) by how many times?

Answer 1

Time taken by Natasha

`=\frac{\text{distance traveled}}{\text{speed}}=\frac{36}{7}=5.143\ hrs`

Time taken by Grover

`=\frac{\text{distance traveled}}{\text{speed}}=\frac{44}{10}=4.4\ hrs`

a) Since the time taken by Grover is less than that taken by Natasha hence Grover's journey is quickest.

b) Grover's journey is quicker by `5.143-4.4=0.743\ hrs`