Question

Paul did $\frac{19}{10}$ of the homework out of $\frac{41}{15.}$ How much homework is left?

• A. $\frac{23}{30}$
• B. $\frac{25}{30}$
• C. $\frac{29}{30}$
• D. $\frac{31}{30}$

Answer 1

The correct option is B $\frac{25}{30}$

Homework remaining = $\frac{41}{15}-\frac{19}{10}$
LCM (15, 10) = 30
$\frac{41}{15}-\frac{19}{10}=\frac{41\times 2}{15\times 2}-\frac{19\times 3}{10\times 3}=\frac{82}{30}-\frac{57}{30}=\frac{82-57}{30}=\frac{25}{30}$