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A car moves with a speed of 30 "km.h"^(-...

A car moves with a speed of 30 `"km.h"^(-1)` in half of the total time taken and with 40 `"km.h"^(-1)` rest of the time, What is the average speed of the body?

Text Solution

Verified by Experts

The correct Answer is:
35 km . `h^(-1)`
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Knowledge Check

  • A person covers half of his path at a speed of 30 "km.h"^(-1) and the remaining half at 40 "km.h"^(-1) . His average speed is

    A
    35 `"km.h"^(-1)`
    B
    60 `"km.h"^(-1)`
    C
    34.3 `"km.h"^(-1)`
    D
    50 `"km.h"^(-1)`

  • A man travels a certain distance with a uniform speed of 5 km/h ad returns the same distance with a uniform speed of 4km/h. What is the average speed of the man?

    A
    `p^(th), q^(th)` and `r^(th)` terms of A.P. are in G.P.
    B
    `p^(th), q^(th)` and `r^(th)` terms of G.P. are in A.P.
    C
    `p^(th), q^(th)` and `r^(th)` terms of H.P. are in H.P.
    D
    none of these

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