Given data:
The time taken by Amy is A=30 min.
The expression for the time taken by Julian is,
[tex]\begin{gathered} J=A+\frac{60}{100}A \\ =(1.6)A \end{gathered}[/tex]
Substitute the given values in the above expression.
[tex]\begin{gathered} J=1.6(30\text{ min)} \\ =48\text{ min} \end{gathered}[/tex]
Thus, the time taken by Julian is 48 minutes.
