C.I for 1 st year = (8000 × 15 × 1)/100 =1200 C.I for 2nd year = (9200 × 15 × 1)/100 = 1380 C.I for 1/3 year = (10580 × 15 × 1)/(100 × 3) = 529 Total C. I = 1200 + 1380 + 529 = Rs. 3109 Alternate Method ; If time is given in ratio (a + 1/b) years, then {Amount = Principal(1+ R/100)a (1+R/100 × 1/b)} Here a= 2 & b =3 A= 8000 (1+15/100)2 (1+15/100×1/3) = 8000 × 23/20 × 23/20 × 21/20 = 11109 C.I = 11109 - 8000 C.I = Rs. 3109
Out of 6 numbers, the sum of the first 5 numbers is 7 times the number. If their average is 136, then the 6th number is:
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The average of 75 percent of x and 48 percent of y is 90. What will be the average of 125 percent of x and 80 percent of y?
2040, 600, 240, 150, ?, 121.875
Average age of A, B and C is 20 years. Average age of B and C was 12 years when A was born. If B is 21 years old, then, find the age of C, 6 years hence.
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The average weight of 4 persons is 66 kg. The heaviest person’s weight is 32 kg more than the lightest person’s weight. If the average weight of the...
