IDNStudy.com, ang iyong mapagkakatiwalaang mapagkukunan para sa maaasahang mga sagot. Magtanong ng anumang bagay at makatanggap ng mga maalam na sagot mula sa aming komunidad ng mga propesyonal.
Elsa, Bob, and Chris will not disclose their weights but agree to be weighed in pairs. Elsa and Bob together weigh 226 pounds.Bob and Chris together weigh 210 pounds. Elsa and Chris together weigh 200 pounds. How much does each student weigh.
let 'x' be the weight of Elsa 'y' be the weight of Bob 'z' be the weight of Chris x + y = 226 ---equation 1 y + z = 210 ---equation 2 x + z = 200 ---equation 3 rearranging equation 3 you'll have the value of x in terms of z x + z = 200 x = 200 - z ----equation 3' substitute to equation 1 x + y = 226 (200 - z) + y = 226 y - z = 226 - 200 y - z = 26 ----equation 4 subtract equation 4 from equation 2 y + z = 210 (-) y - z = 26 2z = 184 z = 92 substitute to equation 3' x = 200 - z x = 200 - 92 x = 108 substitute to equation 1 x + y = 226 y = 226 - x y = 226 - 108 y = 118
Natutuwa kami na ikaw ay bahagi ng aming komunidad. Huwag kalimutang bumalik upang magtanong at magbahagi ng iyong karanasan. Ang iyong kaalaman ay mahalaga sa ating komunidad. May mga katanungan ka? Ang IDNStudy.com ang may sagot. Bisitahin kami palagi para sa pinakabagong impormasyon.
