Question

Kim studies for $3\frac{1}{2}$ hours every Sunday. Represent the time he studies in the form of a decimal.

• A. 3.2 hours
• B. 3.6 hours
• C. 3.5 hours
• D. 3.3 hours

Answer 1

The correct option is C 3.5 hours

Time spent on studies = $3\frac{1}{2}$ hours
Converting this to an impropoer fraction, we get, $\frac{7}{2}$
$\therefore$ $3\frac{1}{2}$ hours = $\frac{7}{2}$ hours
To convert this fraction to an equivalent fraction of denominator 10, we need to multiply by it 5,
Hence. $\frac{7\times 5}{2\times 5}$ = $\frac{35}{10}$ = 3.5
$\therefore$ $3\frac{1}{2}$ hours = 3.5 hours