Question

by running 900 meter and walking another 900 metres, a man covers a distance of 1800 m in 21/2 minutes. If he had run 20% slower and walked 20%faster, he would have taken just 10minutes to cover the distance. Find the speed

Answer 1

Answer:

I think the answer is 11

Answer 2

Answer:

28.5m/s

Step-by-step explanation:

1 min = 70 secs

21/2 mins =630 secs.

Therefore,

Speed=D/T

D=1800m

T=630secs

S= 1800/630 m/s

=28.5m/s