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(1)一份數學盃的考卷有40題,家珍全部寫完,答錯6題,他的答對率是多少?

Ans: 34/40=17/20=85%

(2)承(1)題,若國棟做這份考卷的答案對率是90%,他答對了幾題?

Ans: 40*90%=36題

(3)姐姐這學期的學費繳了3280元,其中15%是書籍費,姐姐的書籍費是多少元?

Ans: 3280*0.15=$492

(4)陽光國小有學生760人,其中女生占全部人數的45%,陽光國小女生有多少人?

Ans: 760*45%=342人

(5)貨車裝了5850個雞蛋,在運送過程中有4%的雞蛋破掉了,破掉的雞蛋有幾個?

Ans: 5850*0.04=234個

(6)一杯珍珠奶茶的成本是25元,老闆以成本加八成做為售價,售價是多少元?

Ans: 25+25*0.8=25*1.8=$45

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