Question

Chen’s report will take 8 and one third hours to complete. He has worked for three fifths of the time doing research. How long has he worked?

Answer 1

Answer:

5 Hours

Step-by-step explanation:

Given:

Chen’s report will take 8 and one third hours to complete.

He has worked for three fifths of the time doing research.

Question asked:

How long has he worked = ?

Solution:

Total hour required to complete the report = $8\frac{1}{3}$ = $\frac{25}{3}$

He has worked of the total hour = $\frac{3}{5}$

He has worked = three fifth of the total time doing research.

                         = $\frac{3}{5} \times\frac{25}{3}$

                         = $\frac{75}{15}$

                         = $5 hours$

Thus,he has worked 5 hours doing his research.