ANSWERS: 1
  • Let X be the price he should charge for $4.00 item. Then [ X + 9.75X/100 = 4 ] ==> [ (100X + 9.75X)/100 = 4 ] ==> [ 109.75X/100 = 4 ] ==> [ 109.75X = 400 ] ==> [ x = 400/109.75 ] ==> [ x = 3.64 ] Same way the prices for others can be calculated

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