Aqua Pure

See More About:    Home Water Treatment Systems        Headneed Battery Water        Aquatect Water        

TrustPaypal verification increases the security for Water Purification users. Verified members have successfully completed PayPal"s Strict Verification system to establish their identity. When you shop for Aqua Pure, you can now do it with confidence.

Frequently Asked Questions...

Algebra homework...... I have to find the percent increase in price......?

Last year, the Aqua-Pure Water Filters company raised their price of a
water filter by 15%.
This year, they raised the price again, by another 15%.
After these two years of 15% price increases, what was the total rate of increase from the original price of two years ago?
You must show your work.

(A) 30% increase from the original price
(B) 22.5% increase from the original price
(C) 32.25% increase from the original price
(D) 60% increase from the original price

How do I do this?


Best Answer...

Answer:

Let the original price of the water filter of Aqua-Pure Water Filters company be 100.
Last year there was 15% increase,
so 100 * 15% = 100 * 15/100 =15
so the new price after 15% increase in original price last year is
100 + 15 = 115.
this year there was 15% increase.
For calculating this year increase we must take the new price after increase last year,
so 115 * 15% = 115 * 15/100 = 17.25.
New price after 15% increase in original price this year is
115 + 17.25 = 132.25.
Increase from original price = 132.25 - 100 = 32.25.
therefore total rate of increase is
32.25 divided by 100 multiplied with 100 = 32.25%.
So the answer is (C) 32.25% increase from the original price