Answer:
Catalin works 48 hours during the week.
Explanation:
Since Catalin divides his weekly worktime using 1/4 of his time in meetings, 5/8 of his time writing reports and the rest of his time doing the accounts, and he spends a total of 6 hours doing the accounts, to find the total number of hours he works in the week the following calculation must be performed: 
1/4 + 5/8 = X 
1/4 + 2.5 / 4 = X 
3.5 / 4 = X 
0.5 = 6 
(4 / 0.5) x 6 = X 
8 x 6 = X 
48 = X 
Therefore, Catalin works 48 hours during the week.