Question 859146
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Hi,
Let x and y represent the cost of the tulips and daffodil's respectively
  3x + 11y = $263
  8x +  5y = $239
  8*3x + 8*11y = 8*263
  -3*8x- 3*5y = -3*239
         73y = 1387
           y = $19    and x = $18   {{{(263-209)/3}}} from   3x + 11y = 263
CHECKING our answer***
8x +  5y = $239
{{{8*18 + 5*19}}} = $239
Wish You the Best in your Studies.