Q:

A) 72 km | B) 36 km |

C) 56 km | D) 42 km |

Answer: A) 72 km

Explanation:

Explanation:

Rate of her upstream = 12/2.5 = **4.8 km/hr**

Then, ATQ

Rate of downstream = 4.8 x 3 = **14.4 km/hr**

Hence, the distance she covers downstream in 5 hrs **= 14.4 x 5 = 72 kms.**

3
708

4
642

1
511

4
690

0
640

1
1704

Q:

A) 2(2 + √17) | B) 3(2 + √17) |

C) 2(4 + √15) | D) 3(4 + √17) |

3
1374

Q:

A) 0.20 Hz | B) 625 Hz |

C) 250 Hz | D) 100 Hz |

2
1316