Question
Aditi, Bishnu, and Chetna initiated a business with the
capital invested by Aditi and Bishnu in a ratio of 9:8. Chetna invested Rs. 800 less than Bishnu. After 18 months, Bishnu and Chetna increased their investment by 25% and 100%, and Chetna doubled her investment. This adjustment led to equal profit shares for Bishnu and Chetna at the end of 3 years. Determine the initial amount invested by Bishnu.Solution
Let the initial investment made by ‘Aditi’ and ‘Bishnu’ be Rs. ‘9a’ and Rs. ‘8a’, respectively. Then, initial investment of ‘Chetna’ = Rs. (8a – 800) Ratio of profit shares of ‘B’ and ‘C’ = (8a × 18 + 8a × 1.25 × 18): {(8a – 800) × 18 + (8a – 800) × 2 × 18} = 324a:(432a – 43200) = 1:1 Or 108a = 43200 So, a = 43200 ÷ 108 = 400 So, amount invested by ‘Bishnu, initially = 8 × 400 = Rs. 3,200
8    13    36    123    ?   2585
14, 86, 150, ?, 254, 294
168, 164, 155, 139, ?, 78
- What will come in place of (?), in the given number series.
1, 1, 2, 3, 5, ?, 13 4, 4, 5, ? , 248, 1248
195% of 1420 + 72 × 25 =?
What will come in place of the question mark (?) in the following series?
3.5, 9.5, 27.5, 81.5, 243.5, 729.5, ?
8 12 30 105 ? 2598.75
...Find the missing number in the given number series.
1, 2, 6, 24, 120, ?11    16    42    141    ?   2945   17700
...
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