Question

ravi travels a distance of 10 1/2km and comes back in 2hrs 20min. what is his speed

Answer 1

Speed = d/t = 10500m/140 min = 75 m/ min=

Answer 2

Given,

$\mathsf{\red{Distance = 10 \frac{1}{2} = \frac{21}{2} \: km}}$

Time = 2 hrs 20 min

= (2 × 60) min + 20 min

= (120 + 20) min

= 140 min

•°• Speed = Distance/Time

= 21/2×140

= 3/20 km/min