Question

Geeta read $\frac{3}{8}$ of a book on one day and $\frac{4}{5}$ of the remaining on another day. Find the portion of the book left unread after two days

• A. $\frac{5}{4}$
• B. $\frac{1}{4}$
• C. $\frac{1}{8}$
• D. $\frac{5}{8}$

Answer 1

The correct option is C $\frac{1}{8}$

Portion of the book left unread after one day$=1-$ portion of the book read on one day
$=1-\frac{3}{8}$

$=\frac{8-3}{8}$

$=\frac{5}{8}$

Portion of the book read on another day$=\frac{4}{5}$ of portion of the book left unread after one day

$=\frac{4}{5}\times \frac{5}{8}$

$=\frac{1}{2}$
Portion of the book left unread after two days $=1-$(portion of book read on one day+portion of book read on another day)
$=1-(\frac{3}{8}+\frac{1}{2})$

$=1-\frac{7}{8}$

$=\frac{1}{8}$