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anonymous

  • one year ago

HELP PLS :'(

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  1. anonymous
    • one year ago
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    A train covered a certain distance at a uniform speed.if the train would have been 10km/h faster , it would have taken 2 hours less than the schedules time.and if the train were slower by 10km/h ; it would have taken 3 hours more than scheduled time.find the distance covered by the train

  2. anonymous
    • one year ago
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    @Preetha and @pooja195 PLS HELP

  3. anonymous
    • one year ago
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    @Abhisar

  4. anonymous
    • one year ago
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    @ganeshie8

  5. Abhisar
    • one year ago
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    Hi! Don't cry, let's try to solve this together c:

  6. anonymous
    • one year ago
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    yep :)

  7. Abhisar
    • one year ago
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    Train is travelling with uniform speed, so first thing you need to know is that when anything is travelling through constant speed then distance traversed is given by speed*time.

  8. Abhisar
    • one year ago
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    So, we can say that time taken is given by distance/speed. Got it?

  9. anonymous
    • one year ago
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    ok

  10. anonymous
    • one year ago
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    then??

  11. Abhisar
    • one year ago
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    Let the speed of train be s and distance be d. Then time taken will be d/s ........ 1 Now, if train would have been 10 km/hr faster then its speed would be (s+10) and time taken would be (T-2). So we can write that d/(x+10) = T-2 .......2

  12. anonymous
    • one year ago
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    oh ya

  13. anonymous
    • one year ago
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    then

  14. Abhisar
    • one year ago
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    Again, if the train would have been 10km/h slower then its speed would have been (s-10) and time taken would have been (T+3) So, we can write that d/(s-10)=T+3

  15. anonymous
    • one year ago
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    hmm

  16. Abhisar
    • one year ago
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    Now, you have 3 variables d, s and T and 3 equations. Can you solve the equations to find the value of variables?

  17. anonymous
    • one year ago
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    i dont knw to solve three i only knw to solve 2

  18. Abhisar
    • one year ago
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    Ok, I'll help you. From equation 1 we know d=st. Now put this value of d in other two equations and solve the 2 equations. Can you do that?

  19. Abhisar
    • one year ago
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    \(\bf Hint\) Value of S will be 50 km/h

  20. anonymous
    • one year ago
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    ok let me try

  21. anonymous
    • one year ago
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    am not getting it

  22. Abhisar
    • one year ago
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    We will get following two equations, st = (T-2)(s+10) st = (T+3)(s-10) Simplifying both of them and then adding. |dw:1439948695514:dw|

  23. anonymous
    • one year ago
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    Thank uh :)

  24. Abhisar
    • one year ago
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    Welcome c:

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