Last Updated on May 11, 2023
We can create the following equation:
Total houses = number with air conditioning + number with sunporch + number with pool – number with only two of the three things – 2(number with all three things) + number with none of the three things
150 = 0.6(150) + 0.5(150) + 0.3(150) – D – 2(5) + 5
150 = 90 + 75 + 45 – D – 10 + 5
150 = 205 – D
D = 55
Answer: D
Scott Woodbury-Stewart is the founder & CEO of Target Test Prep. A passionate teacher who is deeply invested in the success of his students, Scott began his career teaching physics, chemistry, math, and biology. Since then, he has spent more than a decade helping students gain entry into the world’s top business schools, logging 10,000+ hours of GMAT, EA, GRE and SAT instruction. Scott also served as lead content developer and curriculum architect for the revolutionary courses Target Test Prep GMAT, Target Test Prep EA, Target Test Prep GRE and Target Test Prep SAT Quant.