Question

18. A man covers a distance of 15 km in 3 hours.
Find
a.
the distance covered by him in 5 hours.
b. the time taken to cover 10 km.​

Answer 1

Answer:

$a) \: \: \: \: \: \: \: 25 \: km. \\ \\ b) \: \: \: \: \: 2 \: hours.$

Step-by-step explanation:

$speed = \frac{distance}{time} \\ \\ = \frac{15}{3} \\ \\ speed = 5 \: km \: per \: hour \\ \\ \\ a) \: \: \: \: \: \: distance \: travelled \: in \: 5 \: hours = speed \times time \\ = 5 \times 5 \\ = 25 \: km. \\ \\ \\ b) \: \: \: \: \: \: \: \: time \: taken \: to \: cover \: 10 \: km = \frac{distance}{speed} = \frac{10}{5} = 2 \: hours.$

Answer 2

Step-by-step explanation:

speed = distance/time

= 15/3

= 5 km/hrs

a. distance = speed×tim

distance = 5×5

distance = 25km

b. time = distance/speed

time = 10/5

time = 2 hours