Question

Ramesh could run a 100-m race in 20 seconds.after training,he can finish the race in 15 second. by how much has he improve his speed​

Answer 1

Ramesh's speed before training = d/t

=

20

100

=5m/s

Ramesh's speed after training = d/t

=

15

100

=6.66m/s

So, his speed increased by = 6.66−5=1.66 m/s

Have a nice day mate ☺️❤️

Answer 2

Answer:

100/60

Step-by-step explanation:

100/15-100/20

400/60-300/60

100/60

1.66666..... m/s