Answer and explanation

Correct answer: B.

  1. Step 1: Write , so . Step 2. . **Answer: . Why not the others:** takes 60% of 90 instead of reversing it; rounds the quotient wrongly; adds the part to the whole.

Practise more Number, Algebra, Data Sufficiency and Probability.

Free questions with an explanation for every one, and full timed Högskoleprovet (Sweden) mock tests.