The Princeton Review - Princeton Review PSAT 8_9 Prep-Random House Children's Books (2021)

b. The first equation becomes –3(0.8) + 6b = 1.8, or –2.4 +
6b = 1.8. Add 2.4 to both sides to get 6b = 4.2. Divide both
sides by 6 to get b = 0.7. The correct answer is 0.7 or .
24. 24
The question asks for the number of people ages 18–29
who participated in a survey. This question is much longer
and more complicated than Q25, so start with that
question, filling in the table with one piece of information
at a time. The information determined in Q25 is bolded in
the table below.
This question states that 25.6% of the people who chose
coffee as their preferred beverage were 45–64 years old.
The total number of people who prefer coffee is 43, so
0.256(43) = 11 people ages 45–64 prefer coffee. There were
12 people ages 45–64 who prefer tea, so 11 + 12 = 23 people
ages 45–64 surveyed in total. These numbers are bolded in
the table below.
The total number of people surveyed is 116, so 116 – 14 –
23 – 55 = 24 people ages 18–29 surveyed in total. The