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today the price

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by sanju09 » Fri Mar 20, 2009 3:23 am
If today the price of an item is $3,600, what was the price of the item exactly 2 years ago?

(1) The price of the item increased by 10 per-cent per year during this 2-year period.

(2) Today the price of the item is 1.21 times its price exactly 2 years ago.


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by Tryingmybest » Fri Mar 20, 2009 7:11 am
IMO D
1) The price of the item increased by 10 per-cent per year during this 2-year period.
Price before 2 yesrs = X
Price last year = 1.1 X
Price this year = 1.1 + 1.1 * 10 /100 =1.21 X
1.21 X= 3600 we can solve for X
Sufficient


(2) Today the price of the item is 1.21 times its price exactly 2 years ago.

This is the final step of the Previous statement

Sufficient
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by shibal » Mon Mar 23, 2009 11:14 am
IMO D

st.1 = 3.600=x*1.1+(x*1.1*1.1)

suff

st.2

3600=1.21x

suff
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