Question

pls slove step by step​

Answer 1

Answer:

Explanation:

DISTANCE TRAVELLED= 15 KM=15*10³                           [ 1 KM= 1000 M]

                                       =15,000 M

TIME TAKEN= 20 MINUTES=20*60                             [ 1 MINUTE= 60 SEC]

                                             =1200 SECONDS

SPEED= DISTANCE TRAVELLED / TIME TAKEN

(ii) SPEED=15000/1200

               =12.5 M/S

(i) TO CONVERT M/S TO KM/ H MULTIPLY BY 18/5

   NOTE: TO CONVERT KM/H TO M/S MULTIPLY BY 5/18

SPEED IN KM/H =12.5*18/5

                           = 45 KM/H.

HOPE IT HELPS.