標題:
中文解釋！急....20點
發問:
A watch was marked at $1200 by the manufacturer. the watch was sold at 15% discount to a shopkeeper. the shopkeeper marked the price of the watch as $x and offerd a 10% discount. After the shopkeeper sold the watch, he made a 20% profit. Find the value of x 更新: 加答案！唔該晒！
製造商標示這隻錶的價錢是$1200.製造商賣這隻錶給零售商..同時有85折的優惠.零售商標示這隻錶的價錢是$x....同時給予9折優惠.當賣出這隻錶時..他賺了20%利潤.求x的值. 答案: (x*(1-10%)-1200*(1-15%))/1200*(1-15%)=20% (0.9x-1020)/1020=20% 0.9x-1020=1020*20% 0.9x-1020=204 0.9x=1020+204 0.9x=1224 x=1224/0.9 x=1360 只供參考
其他解答:
中文解釋！急....20點
發問:
A watch was marked at $1200 by the manufacturer. the watch was sold at 15% discount to a shopkeeper. the shopkeeper marked the price of the watch as $x and offerd a 10% discount. After the shopkeeper sold the watch, he made a 20% profit. Find the value of x 更新: 加答案！唔該晒！
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最佳解答:製造商標示這隻錶的價錢是$1200.製造商賣這隻錶給零售商..同時有85折的優惠.零售商標示這隻錶的價錢是$x....同時給予9折優惠.當賣出這隻錶時..他賺了20%利潤.求x的值. 答案: (x*(1-10%)-1200*(1-15%))/1200*(1-15%)=20% (0.9x-1020)/1020=20% 0.9x-1020=1020*20% 0.9x-1020=204 0.9x=1020+204 0.9x=1224 x=1224/0.9 x=1360 只供參考
其他解答:
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