According to the question, Simple interest received by A = Rs. 13500 (a + 8000) × 15% × 3 = 13500 (a + 8000) = 30000 a = 22000 Amount invested by V = Rs. 22000 + 3000 = Rs. 25000 Amount invested by T = 22000 – 2000 = Rs. 20000 The total interest received by V and T = Rs. 12360 [25000 × (1 + r/100)2 – 25000] + [20000 × (r – 2)% × 3] = 12360 25000 × (1 + r/100)2 – 25000 + 600(r – 2) = 12360 25000 × (1 + r2/10000 + r/50) – 25000 + 600(r – 2) = 12360 25000 + 2.5r2 + 500r – 25000 + 600(r – 2) = 12360 2.5r2 + 500r + 600r – 1200 = 12360 2.5r2 + 1100r = 13560 r2 + 440r – 5424 = 0 r2 + 452r – 12r – 5424 = 0 r(r + 452) – 12(r + 452) = 0 (r + 452)(r – 12) = 0 r = -452, 12 Rate of interest cannot be negative. So, r = 12
Find the wrong number in the following number series:
2500, 1000, 400, 160, 60
60 32 4 8 -4
Find the wrong number in the given series.
17, 17, 51, 255, 1789, 16065
Find the wrong number in the series given below.
6, 19, 59, 182, 544, 1637
In this question, one term in the number series is wrong. Find out the wrong term.
130, 135, 143, 154, 168, 183, 205
3. 8, 15, 24, 34, 48, 63
Find the wrong number in the series given below.
3, 10, 89, 99, 301, 908
A series is given with one wrong term. Select the correct alternative from the given ones that will complete the series.
33, 44, 66, 110, 199, 374
Find the wrong term in the series given below.
38, 44, 32, 50, 24, 56, 20
8, 20, 48, 108, 232, 482