Question

in a race a runner covered 3.5km in 7 min what was his speed in km/hour​

Answer 1

Step-by-step explanation:

distance = 3.5km = 3500 m

time = 7 min

= (7×60 )sec

= 420 sec

speed = Distance /time

= 3500 ÷ 420

= 8.3 m/s.

speed in km/ hr = 8.3×18÷5

= 29.88 km/ hr

Answer 2

According to the question..

In 7 min 3.5 km

In 1 min 3.5/7 km

In 60 min 3.5/7× 60. 1 hour=60 min

=30 km/h

SO THE RUNNER COVERED 30 KM IN 1 HOUR.