Question

Swati got homework for 2 different subjects from school. She took $\frac{2}{3}$ hour to complete the homework of first subject and to complete the homework of second subject she took twice the time taken by her for first subject. How much time she spent to complete the homework?

• A. $2\frac{1}{2}$ hours
• B. $2$ hours
• C. $1\frac{1}{2}$ hours
• D. $3$ hours

Answer 1

The correct option is B $2$ hours

Time taken by her to complete the homework of first subject
= $\frac{2}{3}$ hour.

So, time taken by her to complete the homework of second subject
= $2\times \frac{2}{3}$ hours
= $\frac{4}{3}$ hours

Therefore, total time taken by her to complete the homework
= $\frac{2}{3}+\frac{4}{3}$

=$\frac{6}{3}$ hours = $2$ hours.