Đáp án:
Giải thích các bước giải:
Ta có sơ đồ:
Quyển truyện:- - -
Cái bút: - - - - -
Giá tiền của một quyển truyện là:
`40 000:(3+5)×3=15 000(đồng)`
Giá tiền của một cái bút là:
`40 000-15 000=25000(đồng)`
Đáp số:`25 000 đồng`
Số giá tiền của quyển truyện là :
40.000 : ( 3 + 5 ) x 3 = 15.000 ( đồng )
Số giá tiền của cái bút là
40.000 - 15.000 = 25.000 ( đồng )
Đáp số : Giá tiền quyển truyện : 15.000 đồng
Giá tiền cái bút : 25.000 đồng
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