Question
A mobile phone costs $136 less than a projector. A hi-fi system costs twice as much as a projector. Given that the total cost of a mobile phone, a projector and a hi-fi system cost $4600, find the cost of the mobile phone.
4 m

Click button first when a symbol is required. X

A mobile phone costs $136 less than a projector. A hi-fi system costs twice as much as a projector. Given that the total cost of a mobile phone, a projector and a hi-fi system cost $4600, find the cost of the mobile phone.