Re: [計量] 數學又來了
※ 引述《murai111 (明鏡止水)》之銘言：
: Given that the number of architects in an organization is 1/4 of the
: total and the organization hired 60 more persons of which 50 are
: architects and after which the ratio of architects increased from
: 1/4 to 1/3. Find the number of people in the organization if none of
: them have gone out of the organization?
: 答360?
在hire前總人數是Q人 architects x人
1/4=y/Q
1/3=(y+50)/(Q+60)
得Q=360 x=90
如果題目問的是hire後的總人數 答應是420
: 13. A right angled triangle ABC is given whose sides have been extended
: to form three squares.
: Col A: Area of square formed by hypotenuse.
: Col B: sum of areas of squares formed by other two sides
: 不確定題意 我答 C
利用三角形的三邊做出三個正方形
設斜邊是c 因是直角三角形 則c^2=a^2+b^2 答C
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※ 編輯: eadanlin 來自: 130.126.76.250 (08/21 00:05)
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08/21 15:17, , 1F
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