问题描述：
英语翻译
1.百分之70 of a cake is flour,百分之20 eggs and the remaining portion is milk.ifthe eggs used weigh 320g,what is the weigh of flour used?
2.The ratio of apples to oranges in a lorry was 5:2,there were 248 oranges,how many apples were there?
1.百分之70 of a cake is flour,百分之20 eggs and the remaining portion is milk.ifthe eggs used weigh 320g,what is the weigh of flour used?
2.The ratio of apples to oranges in a lorry was 5:2,there were 248 oranges,how many apples were there?
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