A student is tracking their reading progress. On Monday, they read 0.4 of a book. On Tuesday, they read 1/3 of the remaining portion of the book. What fraction of the entire book is left unread after Tuesday?
Show answer & explanation
Correct answer: C
Explanation
Total book = 1
Read on Monday = 0.4 = 2/5
Remaining = 1 − 2/5 = 3/5
Read 1/3 of the remainder on Tuesday -
= (1/3) × (3/5) = 1/5
Total read = 2/5 + 1/5 = 3/5
Remaining = 1 − 3/5 = 2/5