Question
If Simple Interest is 12.5% more than the principal and
number of years(n), rate(r) are numerically in the ratio 2 : 1, then find the values of n, r.Solution
Let principal =100 Then SI =100+12.5 =112.5 Given the ratio of time and rate =2:1 Time =2x and rate =x Now using formula of -SI =PRT/100 112.5 = (100×2x × x)/100 x2 =112.5 /2 =1125/20 x2 =225/4 x =15/2 =7.5 And time =2×7.5 =15years
More Simple and compound interest Questions
Find the wrong number in the given number series.
16, 24, 36, 54, 81, 120.5
2Â Â Â Â Â 27Â Â Â Â Â Â 43Â Â Â Â Â 50 Â Â Â Â Â Â 56 Â Â Â Â Â Â Â 57
...6Â Â Â 9Â Â Â 14Â Â Â Â 22Â Â Â Â 30Â Â Â Â Â 41Â Â Â Â Â
...259, 372, 495, 618, 741, 864
Find the wrong number in the given number series.
10, 17, 26, 39, 59, 85
- Find the wrong number in the given number series.
60, 75, 101, 150, 210, 285 171, 86, 87, 132, 266, 668
- In the given number series, find the wrong number.
120, 60, 30, 15, 7.5, 3.25, 1.875 164, 160, 172, 136, 188, 128
42, 61, 78, 93, 102, 109
