SOLUTION: TJ has 2 types of cereal bar: raisin and nut bars. each raisin bar is 12p more than a nut bar. 9 raisin bar and 12 nut bar cost £5.28. 1) how much more do nine raisin bars cost

Question 1145331: TJ has 2 types of cereal bar: raisin and nut bars. each raisin bar is 12p more than a nut bar. 9 raisin bar and 12 nut bar cost £5.28.
1) how much more do nine raisin bars cost than nine nut bars?
2) how much does a raisin bar cost?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
r=n+.12
n=r-.12
9*r+12*n=5.28
9*r+12*(r-.12)=5.28
9r+12r-1.44=5.28
21r=6.72
r=6.72/21
r=.32=32p for a raisin bar
n=.20=20p for a nut bar
9r=9*.32=£2.88
9n=9*.20=£1.80
9*.32-9*.20=£1.08 more for 9 raisin bars
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