SOLUTION: If lisa and fred spent 15.30 but lisa spent 3.50 more than fred, how much each spent? Thanks

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Question 533674: If lisa and fred spent 15.30 but lisa spent 3.50 more than fred, how much each spent? Thanks
Answer by Maths68(1474) About Me  (Show Source):
You can put this solution on YOUR website!
Let
Lisa spent = l
Fred Spent = f

lisa and fred spent 15.30
l+f=15.30.........(1)

lisa spent 3.50 more than fred
l = f + 3.50.........(2)

Put the value of l in (1)
f+3.50+f=15.30
2f=15.30-3.50
2f=11.80
f=11.80/2
f=5.90
Plug in the value of f in (2)
l = f + 3.50
l = 5.90 + 3.50
l = 9.4

Lisa spent = l = 9.4
Fred Spent = f = 5.90