var bills = {
  billAmounts: [124, 48, 268, 180, 42],
  allTips: [],
  totalPaid: [],
  calcTip: function () {
    for (var i = 0; i < this.billAmounts.length; i++) { //runs through each interger in array

      if (this.billAmounts < 50) {
        this.allTips.push(this.billAmounts[i] * 0.20);
      } else if(this.billAmounts > 50 < 200) {
        this.allTips.push(this.billAmounts[i] * 0.15);
      }else{
        this.allTips.push(this.billAmounts[i] * 0.15);
      }
    }

    this.totalPaid.push(this.billAmounts[0] + this.allTips[0])
    this.totalPaid.push(this.billAmounts[1] + this.allTips[1])
    this.totalPaid.push(this.billAmounts[2] + this.allTips[2]
    this.totalPaid.push(this.billAmounts[3] + this.allTips[3])
    this.totalPaid.push(this.billAmounts[4] + this.allTips[4])


    for (var i = 0; i < this.billAmounts.length;i++){
      return this.totalPaid.push(this.billAmounts[i] + this.allTips[i]);
  }
}