I just published the playlist of videos that explain all of the math questions in the 2020 PSAT Wednesday Test that was administered on 14th October 2020.
Archives for January 2021
SAT math practice question: Percent change
Try the following SAT math practice question (Calculator permitted) that tests your understanding of percentage change.
The price of a share of stock $X$ increased by $25\%$ from $2010$ to $2012$ and then decreased by $15\%$ from $2012$ to $2014$. If the price of a share of stock $X$ was $\$84$ in $\underline{2012}$, what was the change in the price of a share of stock $X$ from $2010$ to $2014$?
- $\quad \textrm{Increase of $\$4.20$}$
- $\quad \textrm{Decrease of $\$4.20$}$
- $\quad \textrm{Increase of $\$8.40$}$
- $\quad \textrm{Decrease of $\$8.40$}$