(133) 直角三角形,斜边是1,其中一角是30度,问另两边的比(短边比长边)
[确认] 3^1/2 : 3
should be 1/根号3
1^2=(1/2)^2+x^2, x=(根号3)/2
32) a retailer purchase product C as the same amount as product D, and sell them at a higher price. The selling price of C is higher than that of D.
问C的毛利比D的高多少
1) Selling price of C is 1.15 of that of D
2) The gross income of D is 某一具体数
My answer: E
原jj是:purchase price of product C is as the same as that of product D.
就算知道价格相等也算不出C的毛利比D的高多少
而现在题目改成采购的数量相等,那就更算不出来了。