Question

A train takes 6 hours to complete a journey at a speed of 72 km/h. How long will another
train take to complete the same journey if its speed is 15 m/s?
Resh​

Answer 1

Answer:

FOR THE FIRST TRAIN,

DISTANCE=432km

FOR THE SECOND TRAIN,

TIME = 8 HOURS

Step-by-step explanation:

FOR THE FIRST TRAIN,

TIME=6 HOURS

SPEED = 72km/h

DISTANCE = x

WE KNOW,

S=D/T

72km/h=x/6h

x=72 km/h*6h

x=432 km

FOR THE SECOND TRAIN,

DISTANCE = 432 km

SPEED = 15m/s

TIME=x

WE KNOW,

S=D/T

15m/s=432km/x

x=(432km*s)/15

x=432*1000m*s/15

x=144*200*s

x=28800*s

NOW,TO CONVERT INTO HOURS,

WE HAVE TO DIVIDE IT BY 100

SO,

x=28800/3600

x=8 HOURS

I HOPE YOU UNDERSTOOD THE QUESTION