A invested 30% more than B. B invested 40% less than C, if C invested Rs. 8,000. The average of the total amount invested by all of them together (rounded off to the nearest rupee) is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 6,347.
We know that,
Average = Sum of observations/Number of observations
Now,
Investment of B = 8000 - 8000 × 40% = Rs. 4800
Investment of A = 4800 + 4800 × 30% = Rs. 6240
Total investment of them = 6240 + 4800 + 8000 = 19040
Average of the investment of them = = Rs. 6346.67 ≈ Rs. 6347