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Amy raised £n for charity. Chris raised £18 more then any. The mean amount raised by the two of them is £45. Work out how much money each one of them raised.
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4 votes
Amy raised £n for charity.

Chris raised £18 more then any.
The mean amount raised by the two of them is £45.
Work out how much money each one of them raised.

User Offroff
by
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1 Answer

6 votes
Amy = n
Chris = n + 18

Mean = 1/2 (Amy + Chris)

45 = 1/2 (n + n + 18)
45 = 1/2 (2n + 18)
45 = n + 9

36 = n

Amy = 36
Chris = 54
User Legendre
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