What are doing now?“六·一”儿童节前,某玩具商店根据市场调查,用2500元购进一批儿童玩具,上市后很快脱销,接着又用4500元购进第二批这种玩具,所购数量是第一批数量的1.5倍,但每套进价多了10元

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Whataredoingnow?“六·一”儿童节前,某玩具商店根据市场调查,用2500元购进一批儿童玩具,上市后很快脱销,接着又用4500元购进第二批这种玩具,所购数量是第一批数量的1.5倍,但每套进

What are doing now?“六·一”儿童节前,某玩具商店根据市场调查,用2500元购进一批儿童玩具,上市后很快脱销,接着又用4500元购进第二批这种玩具,所购数量是第一批数量的1.5倍,但每套进价多了10元
What are doing now?
“六·一”儿童节前,某玩具商店根据市场调查,用2500元购进一批儿童玩具,上市后很快脱销,接着又用4500元购进第二批这种玩具,所购数量是第一批数量的1.5倍,但每套进价多了10元．
（1）求第一批玩具每套的进价是多少元?
（2）如果这两批玩具每套售价相同,【且全部售完后总利润不低于25%,】那么每套售价至少是多少元?

What are doing now?“六·一”儿童节前,某玩具商店根据市场调查,用2500元购进一批儿童玩具,上市后很快脱销,接着又用4500元购进第二批这种玩具,所购数量是第一批数量的1.5倍,但每套进价多了10元
不好意思,之前没注意到你求助本问题,现在看求助记录才发现未作答,在此向你表示歉意.





（1）设第一批玩具每套的进价是 x 元,数量为a个,则根据题意得
ax = 2500                 ……①
1.5a（x+10）= 4500……②
①÷②得
x/[1.5(x+10)] = 2500÷4500=5/9
9x=7.5(x+10)
1.5x=75
x = 50

（2）(2500+4500)×(1+25%)÷(50+75) 
= 7000 × 1.25 ÷ 125 
= 70（元）


答：第一批玩具每套的进价是 50 元；每套售价至少是70元.


解法2：

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