A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

A. 80 Sec
B. 89 Sec
C. 90 Sec
D. 95 Sec

Explanation:
Best 5 steps methods.
1.Data:
Distance= d1= 240m
Time =t= 24 Sec
Distance =d2=650
2.Required:
Time =T=??
3. Formula: D=S×T
d1+d2= S× T
Now for T=??
T= d1+d2/S
4.Solution: first for speed
S=d1/t=240m/24Sec = 10 m/Sec
Now for time
T =d1+d2/S
Putting values in T formula.
T= (240 m+ 650 m) /10 m/Sec
T= 890 m/10 m/Sec
T = 89 Sec
5.Result:
T= 89 Seconds