The price of a certain product increased by the same percent from 1960 to 1970 as from 1970 to 1980. If its price of $1.80 in 1970 was 150 percent of its price in 1960, what was its price in 1980?	Choose the correct choice from the following answers
A) a) $ 1.80  B) b) $ 2.00  C) c) $ 2.40  D) d) $ 2.70  E) e) $ 3.00
The price in 1970 was 150 percent of its price in 1960, means that the percent increase was 50% from 1960 to 1970 (and from 1970 to 1980).   Therefore the price in 1980 = $1.8*1.5 = $2.7.   Answer: d) $ 2.70.
<result>D</result>
The price of a certain product increased by the same percent from 1960 to 1970 as from 1970 to 1980. If its price of $1.80 in 1970 was 150 percent of its price in 1960, what was its price in 1980?