646 .
Prem invested a certain sum of money in a simple interest bond whose value grew to Rs. 300 at the end of 3 years and to Rs. 400 at the end of another 5 years. What was the rate of interest in which he

A. | 12% |

B. | 12.5% |

C. | 6.67% |

D. | 8.33% |

647 .
A sum was put at simple interest at a certain rate for 3 years. Had it been put at 1% higher rate, it would have fetched Rs. 5100 more. The sum is

A. | Rs. 170000 | B. | Rs. 150000 |

C. | Rs. 125000 | D. | Rs. 120000 |

648 .
A person invested some amount at the rate of 12% simple interest and a certain amount at the rate of 10% simple interest. He received yearly interest of Rs. 130. But if he had interchanged the amounts

A. | Rs. 700 |

B. | Rs. 500 |

C. | Rs. 800 |

D. | Rs. 400 |

649 .
A sum of Rs. 7700 is to be divided among three brothers Sunil, Sumant and Surat in such a way that simple interest on each part at 5% per annum after 1, 2 and 3 year respectively remains equal. The sh

A. | Rs. 2800 | B. | Rs. 2500 |

C. | Rs. 3000 | D. | Rs. 2700 |

650 .
If Rs. 1000 be invested at interest rate of 5% and the interest be added to the principal after 10 year, then the number of years in which it will amount to Rs. 2000 is

A. | 16(2/3) year | B. | 16(1/4) year |

C. | 16 year | D. | 11 year |

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