看答案网一道很简单的英语数学题但是我没太搞懂.Brendanpaidabillusingonlyquarters,Ifnickelshadbeenusedtopaythebill,then72morenickelswouldhavebeenneeded.Howmuchwasthebill?注：nickel五分硬币quarter25分硬币（
一道很简单的英语数学题但是我没太搞懂.
Brendan paid a bill using only quarters,If nickels had been used to pay the bill,then 72 more nickels would have been needed.How much was the bill?
注：nickel五分硬币 quarter25分硬币
（算式啦）
Brendan paid a bill using only quarters,If nickels had been used to pay the bill,then 72 more nickels would have been needed.How much was the bill?
注：nickel五分硬币 quarter25分硬币
（算式啦）
参考答案
Brendan仅用了25分的硬币付款（不知道几个）,如果用五分硬币付款（同样地个数）,则还需要72个五分硬币,问账单多少钱.设用了X个硬币,则25X=5X+72*5,得X=16,故账单25*16=400分
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