.Algebra formula help plugs and sockets

Question

The formula for the total cost,C, of 15 plugs and sockets is:

C = 15(P + S)

Where P is the ocst of a plug and S is the cost of a socket.

Find the total cost of 15 plugs and sockets if plugs cost 40p and sockets cost 260p.

 

 

Really stuck on this algebra, please help.

 

 

I'm reaaaaaaaaaaalllllyy bad at it. :(

Answer 1

P = 40p             given

S = 260p           given

C = 15(P + S)    given

C = 15(40p + 260p)  substitute

 

Can you simplify?