Step-by-step explanation:
Let the number of weeks be X.
[tex]743 = x \times 63 + 50 \\ 743 = 63x + 50 \\ 743 - 50 = 63x \\ 693 = 63x \\ x = 693 \div 63 \\ \frac{693}{63} \\ \\ = 11 \: weeks[/tex]
Here, is your answer.
...and by the way myself Zeeshan Khan from India
