Question $9$: cMOS, switching power

An IC with a switching rate of $5$ GHz and V$\_($DD$)=4$V is dissipating $60$ W $.$ What will be the power dissipation if we change V$\_($DD$)$

to $3$ V and the switching rate to $2$ GHz while keeping the activity factor the same?

P$\_($new $)10,10,10,10,10$