Question

こた

わかる方教えてください

I do some teaching
Three teachers were discussing how long they had been teaching.
Adrian and Betty had been teaching for a total of 36 years.
Charles and Betty had been teaching for a total of 22 years.
Charles and Adrian had been teaching for a total of 28 years.
How long had each been teaching?

謎解き 英語 高校生

Answer 1

未設定

エイドリアンをA、ベティをB、チャールズをCと置いて、方程式を立ててみてください。