Q:

A) 1.78 kmph | B) 2.35 kmph |

C) 2.83 kmph | D) 3.15 kmph |

Answer: C) 2.83 kmph

Explanation:

Explanation:

Given speed of the person = 8 1/2 = 17/2 kmph

Let the speed of the stream = x kmph

speed of upstream = 17/2 - x

speed of downstream = 17/2 + x

But given that,

2(17/2 - x) = 17/2 + x

=> 3x = 17/2

=> x = 2.83 kmph.

4
1202

5
1124

2
868

4
1034

1
1011

1
2070

Q:

A) 2(2 + √17) | B) 3(2 + √17) |

C) 2(4 + √15) | D) 3(4 + √17) |

3
1875

Q:

A) 0.20 Hz | B) 625 Hz |

C) 250 Hz | D) 100 Hz |

2
1590