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The speed of a motor boat is 20 km/hr. F...

The speed of a motor boat is 20 km/hr. For covering the distance of 15 km the boat took 1 hour more for upstream than downstream.

Let speed of the stream be x km/hr. then speed of the motorboat in upstream will be

A

20 km/hr

B

(20 + x) km/hr

C

(20 - x) km/hr

D

2 km/hr

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • John and Priya went for a small picnic. After having their lunch Priya insisted to travel in a motor boat. The speed of the motor boat was 20 km/hr. Priya being a Mathematics student wanted to know the speed of the current. So she noted the time for upstream and downstream. She found that for covering the distance of 15 km the boat took 1 hour more for upstream than downstream. Let speed of the stream be x km/hr. then speed of the motorboat in upstream will be

    A
    `20 km//hr`
    B
    `(20+x) km//hr `
    C
    `(20-x) km//hr`
    D
    `2 km//hr`

  • The speed of a boat downstream is 15 km/hr and the speed of the stream is 1.5 km/hr. The speed of the boat upstream is -----

    A
    13.5 km/hr
    B
    16.5 km/hr
    C
    12 km/hr
    D
    8.25 km/hr

  • The speed of a boat downstream is 15 km/hr and the speed of the stream is 1.5 km/hr. The speed of the boat upstream is -----

    A
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    B
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    C
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