2. 外语
  3. Jim’s Hardware store normally sells bulk nails at $1.09 a pound. There is a sale of 3 pounds of nails for $2.How much can be sav

Jim’s Hardware store normally sells bulk nails at $1.09 a pound. There is a sale of 3 pounds of nails for $2.How much can be sav

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问题 Jim’s Hardware store normally sells bulk nails at $1.09 a pound. There is a sale of 3 pounds of nails for $2.How much can be saved by purchasing 9 pounds of nails at the sale price?
选项 A、$1.89
B、$3.24
C、$4.29
D、$6.57
E、$9.90
答案B
解析 The correct answer is B. The first step in solving this problem is to calculate the cost of 9 pounds of nails at the regular price:
9($1.09)= $9.81
Next, calculate the cost of 9 pounds of nails at the sale price:
3($2.19)= $6.57
Finally, subtract $6.57 from $9.81 to get a savings of $3.24.
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