Question

（8分）某手機專營店代理銷售A、B兩種型號手機．手機的進價、售價如下
表：

（1）第一季度：用36000元購進A、B兩種型號的手機，全部售完后獲利6300元，求
第一季度購進A、B兩種型號手機的數(shù)量；
（2）第二季度：計劃購進A、B兩種型號手機共34部，且不超出第一季度的購機總費用，則A型號手機最多能購多少部？

Answer 1

（1）解：設該專營店第一季度購進A、B兩種型號手機的數(shù)量分別為x部和y部． 1分
答：該專營店本次購進A、B兩種型號手機的數(shù)分別為15部和18部．······························································ 4分
（2）解：設第二季度購進A型號手機a部．···················································· 5分
由題意可知：1200a+1000(34－a)≤36000，····················································· 6分
解得：a≤10··························································································· 7分
不等式的最大整數(shù)解為10
答：第二季度最多能購A型號手機10部．······················································ 8分

解析