Ease Into Prep with an SAT^® Question of the Day

You can work this question step-by-step: 32% of the 600 seniors take chemistry, so that is 0.32(600) = 192. Of these seniors who take chemistry, 25% take advanced chemistry, so that is 0.25(192) = 48. Choice (B) is correct. You might also use estimation to answer this one; if you recognize that 32% is just a bit less than 1/3, then 32% of 600 is just a bit less than 200; 25% of 200 is 50, so you need an answer that is just a bit less than 50. Only (B) works.