SOLUTION: A plumber uses this formula to find the cost (£c)when he is called out for an emergency: c= 30h 45 where h is the number of hours the job takes Work out the cost if the job takes:

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Question 1013425: A plumber uses this formula to find the cost (£c)when he is called out for an emergency: c= 30h 45 where h is the number of hours the job takes Work out the cost if the job takes: 2 hours
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
I'm thinking you meant c = 30h + 45
Thus, if he works for two hours, then the charge would be
c = (30)(2) + 45 = 105 pounds