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Question Number 180625 by Mastermind last updated on 14/Nov/22

During the challenge Cup season. Team  A scored 15 goals more than Team B.  They have 121 goals between them.  how many goals did each team score?

$$\mathrm{During}\:\mathrm{the}\:\mathrm{challenge}\:\mathrm{Cup}\:\mathrm{season}.\:\mathrm{Team} \\ $$$$\mathrm{A}\:\mathrm{scored}\:\mathrm{15}\:\mathrm{goals}\:\mathrm{more}\:\mathrm{than}\:\mathrm{Team}\:\mathrm{B}. \\ $$$$\mathrm{They}\:\mathrm{have}\:\mathrm{121}\:\mathrm{goals}\:\mathrm{between}\:\mathrm{them}. \\ $$$$\mathrm{how}\:\mathrm{many}\:\mathrm{goals}\:\mathrm{did}\:\mathrm{each}\:\mathrm{team}\:\mathrm{score}? \\ $$$$ \\ $$

Answered by Acem last updated on 17/Nov/22

A= 15 +B  ⇒ A−B= 15  ...(1)   A+B= 121 ...(2)     (1)+(2) ⇒ 2A= 136 ⇒ A= 68      from (1) B= A−15 ⇒ B= 53

$${A}=\:\mathrm{15}\:+{B}\:\:\Rightarrow\:{A}−{B}=\:\mathrm{15}\:\:...\left(\mathrm{1}\right) \\ $$$$\:{A}+{B}=\:\mathrm{121}\:...\left(\mathrm{2}\right) \\ $$$$ \\ $$$$\:\left(\mathrm{1}\right)+\left(\mathrm{2}\right)\:\Rightarrow\:\mathrm{2}{A}=\:\mathrm{136}\:\Rightarrow\:{A}=\:\mathrm{68}\: \\ $$$$ \\ $$$$\:{from}\:\left(\mathrm{1}\right)\:{B}=\:{A}−\mathrm{15}\:\Rightarrow\:{B}=\:\mathrm{53} \\ $$

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