Prep 9

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Source: — Data Sufficiency |

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by Tryingmybest » Thu Nov 20, 2008 8:30 am
let n be the number of loaves bought

then in general we can write cost paid =P + (n-1)q

From 1 P+ (2-1)q = 90/100(p) => P +q=.9p

From 2 P+5q = 10

Solve for P

So C :D