英文的数学题the ratio of blue marbles to green marbled in a bag is
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英文的数学题
the ratio of blue marbles to green marbled in a bag is 2 to 5 .there are 25 green marbles how many marbles in which color would you have to add to make the ratio
请回答该问题.并且解释为何要这样算
the ratio of blue marbles to green marbled in a bag is 2 to 5 .there are 25 green marbles how many marbles in which color would you have to add to make the ratio
请回答该问题.并且解释为何要这样算
原题是:The ratio of blue marbles to green marbles in a bag is 2 to 5.there are 25 green marbles.How many marbles in which color would you have to add to make the ratio 1 to
题意如下:在一个袋子里面,蓝色的弹珠和绿色的弹珠的比例为2:5,绿色的弹珠有25个.问:要增加哪种颜色的弹珠使得袋中两者的比例为1:增加多少?
(-)设增加的是蓝珠.增加前蓝珠的比列占总弹珠的2/7=8/28.增加后若蓝色:绿色为1:3,则蓝色占总弹珠的1/4=7/28
题意如下:在一个袋子里面,蓝色的弹珠和绿色的弹珠的比例为2:5,绿色的弹珠有25个.问:要增加哪种颜色的弹珠使得袋中两者的比例为1:增加多少?
(-)设增加的是蓝珠.增加前蓝珠的比列占总弹珠的2/7=8/28.增加后若蓝色:绿色为1:3,则蓝色占总弹珠的1/4=7/28
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