Given,
The salary for the technician from shop A is $900 per week.
The salary for the technician from shop B is $25 per hour.
The equation for the total pay for shop B is,
[tex]\text{Total pay= salary of per hour}\times number\text{ of hour worked}[/tex]Taking the total pay as 900. As, to make the shop A and shop B equal.
[tex]\begin{gathered} 900=25\times Number\text{ of hour worked} \\ Number\text{ of hour worked}=\frac{900}{25}=36 \end{gathered}[/tex]Hence, he would have to log 36 hours during a week at Shop B in order to match the salary at Shop A.