Q:

A) Only A and B | B) Only B and C |

C) All are required | D) Any one pair of A and B, B and C or C and A is sufficient |

Answer: D) Any one pair of A and B, B and C or C and A is sufficient

Explanation:

Explanation:

Let distance between A & B = d km

Let speed in still water = x kmph

Let speed of current = y kmph

from the given data,

d/x = 2

From A) we get d

From B) we get d/x+y

From C) we get y

So, Any one pair of A and B, B and C or C and A is sufficient to give the answer i.e, the speed of upstream.

0
172

Q:

A) 4 kmph | B) 2 kmph |

C) 3 kmph | D) 1 kmph |

1
278

4
436

1
660

Q:

A) 75 kmph | B) 70 kmph |

C) 60 kmph | D) 65 kmph |

3
769

3
754

9
820

Q:

A) 16 kmph | B) 8 kmph |

C) 3 kmph | D) 9 kmph |

2
641