Here P= Rs. 12,000 , R= 15%

T = Money kept for the No of days divided by 365

Jan (31-13) = 18 days

Feb = 28 days

March = 31 days

April = 30 days

May = 31 days

June = 8 days

Total = 146 days

T = years

S.I =

= years

= Rs. 720

A = 12000 + 720 = Rs. 12720

Mohan paid Rs. 12,720 to the money-lender to clear his debt.

A) 2.9 years | B) 3.5 years |

C) 4.2 years | D) 4.7 years |

Explanation:

Given that Rs. 1860 will become Rs. 2641.20 at 12%

=> Simple Interest = 2641.20 - 1860 = Rs. 781.20

We know **I = PTR/100**

=> 781.20 x 100 = 1860 x T x 12

=> T = 78120/1860x12

=> T = 78120/22320

=> T = 3.5 years.

A) 30% | B) 25% |

C) 22% | D) 18% |

A) Rs. 175 | B) Rs. 220.75 |

C) Rs. 126 | D) Can't be determined |

Explanation:

Here given Interest earned = Rs. 2260

Time = 3 years

Rate of interest = ?

Principal Amount = ?

So, it can't be determined.

A) 14.5% | B) 11% |

C) 12% | D) 10.5% |

Explanation:

Let the interest rate be r%

We know that,

S.I = PTR/100

=> (1540 x 5 x r)/100 + (1800 x 4 x r)/100 = 1788

=> r = 178800/14900 = 12%

A) Rs. 6000 | B) Rs. 5550 |

C) Rs. 7500 | D) Rs. 6580 |

Explanation:

Let the sum invested be Rs. P

Let the rate of interest be R% per annum

=> Interest earned for 5 years = (P x 5 x R/100) = PR/20

Now, given that the interest earned increased by Rs. 600 if the Rate increased to (R+2)%

=> SI = (P x 5 x (R+2))/100 = PR/20 + 10P/100

Hence,

PR/20 + 10P/100 = PR/20 + 600

=> P = 6000

Therefore, the sum invested is **Rs. 6000**