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# A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long? A. 65 sec B. 79 sec C. 89 sec D. 99 sec

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A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long?
A. 65 sec
B. 79 sec
C. 89 sec
D. 99 sec
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1. 240/24=650/x
650/x=10
x=650/10
x=65

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2. speed (S) = D/t
= 240m/24s
= 10m/s

t = D/S
= 650+240/10
=890/10
=89 seconds

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3. for 240 m —– 24 sec
for 240+650 m—— ?

Cross multiple 890*24 / 240+89 sec

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4. 89 sec

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5. Â 240 m long train, the time it takes to cross a pole is 24 seconds,to find the time that the same train will take to cross a 650 m platform. Hence, we got the speed of the train as 10 m/s. From the top calculations, the train will takeÂ 89 secondsÂ to cross the platform so the answer is

(C).89 seconnfd

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6. A
240:24=650:x
=65

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7. 89

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8. 240=24
650=X
240X=650X24
X=15600/240
X=65

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9. Actual speed of train 240m/24 sec i.e. 10m/sec..
Now time taken by train to cross a platform of 650 m will be
Total distance/speed
I.e. (650+240)m/10m/sec…
890m/10m/sec
89sec

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10. s=D/t
Train’s speed=240/24=10m/s
distance=(240+650)=890m
time=D/s
time=890/10
time=89

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11. 89sec

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12. 65 sec

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• if it is a pole then your answer is correct but now it is a platform

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13. 89 sec

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