Madhavi1990 wrote:
After one persons rent is increased by 20% the new mean is $850.What was original rent of friend whose rent is increased?
Doesn't the question ask for original rent?New rent after increase of 20% is 1000.
Would like some clarity, thank you
Average of money that group of 4 friends pay for rent each month is $800. After one persons rent is increased by 20% the new mean is $850. What was original rent of friend whose rent is increased?A. 800
B. 900
C. 1000
D. 1100
E. 1200
Average of money that group of 4 friends pay for rent each month is $800 --> the total amount paid by 4 friends = 4*800 = 3200.
After one persons rent is increased by 20% the new mean is $850 --> NEW total = 4*850 = 3400.
The difference = 3400 - 3200 = 200.
This amount is due to one persons rent increase by 20%, so 200 is 20% of that person's rent x*0.2 = 200 --> x = 1000 (original rent of that person was $1000 and after the increase of 20% it became $1200).
Answer: C.
Hope it's clear.
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