Question
Suresh earned an interest of Rs. 645 on principal amount
of Rs. 2000 at some rate of compound interest in 2 years. How much more/less interest would he have earned on Rs. 2300 at the same rate of simple interest for the same duration?Solution
Let, rate of interest be ‘r’% per annum So, 645 = 2000 × {(1 + r/100)2 – 1} 129/400 = {(1 + r/100)2 – 1} 529/400 = (1 + r/100)2 (23/20)2 = (1 + r/100)2 23/20 = 1 + r/100 3/20 = r/100, r = 15 So, simple interest earned = 2300 × 0.15 × 2 = Rs. 690 Required amount = 690 – 645 = Rs. 45
The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represente...
In the following question, a word is represented by only one set of numbers as given in anyone of the alternatives. The sets of numbers given in the alt...
A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented ...
A word is represented by only one set of numbers as given in any one of the alternatives. These sets of numbers given in the alternatives are represent...
A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented ...
Relevant for Exams:
