Please help with the following.

2. Calculating the effective rate of protection GiobalCeiI is an American rm producing ceii phones. GlobaICell imports cell phone components from Japan and assembles them domestically. Suppose that in the United States, a cell phone sells for $500 and that 60% of the cell phone's value comes from the value of the imported components. The United States imposes a 50% tariff on cell phones and a 10% tariff on the ceii phone's components. Assume that costs of producing components are the same in the United States and Japan and that transit costs are nonexistent. Based on the information provided, the effective rate of protection that GlobalCell receives from the tariff is V