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An aeroplane travelled a distance of 400...

An aeroplane travelled a distance of 400km at an average speed of x km/hr. On the return journey, the speed was increased by 40km/hr.

The expression for times taken for the onward journey is

A

`(400)/(x)`

B

400x

C

`(x)/(400)`

D

`x+ 400`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • An aeroplane travelled a distance of 400km at an average speed of x km/hr. On the return journey, the speed was increased by 40km/hr. The expression for time taken for the return journey is

    A
    `400(x+ 40)`
    B
    `(x+40)/(400)`
    C
    `(400)/(x+ 40)`
    D
    `440+x`

  • An aeroplane travelled a distance of 400km at an average speed of x km/hr. On the return journey, the speed was increased by 40km/hr. The positive value of x is

    A
    220
    B
    240
    C
    200
    D
    160

  • An aeroplane travelled a distance of 400km at an average speed of x km/hr. On the return journey, the speed was increased by 40km/hr. If the return journey took 30 minutes less than the onward journey, then the equation formed in x is:

    A
    `x^(2)- 40x- 32000= 0`
    B
    `x^(2)+40x- 32000= 0`
    C
    `x^(2)+ 40x+ 32000+ 0`
    D
    `x^(2)- 40x+ 32000= 0`

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