Question

[Ahn Hee Yeon]

• The sum of A and B is 598. The sum of B and C is 374. The sum of C and D is 300. Find the sum of A and D.
  Answer: The sum of A and D is........

   

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Answer 1

[Lê Nhật Khôi]

According to the question,

Whe have: \(\hept{\begin{cases}A+B=598\\B+C=374\\C+D=300\end{cases}}\)

=> \(A+B+C+D=598+300=898\)

=> \(A+D=898-B-C=898-374=524\)