Đáp án: 1 giờ 15 phút= 75 phút
Thời gian An học Tiếng Việt là:
75-25=50(phút)
Thời gian An học Tiếng Việt và Toán là:
75+50=125(phút)=2 giờ 5 phút
=> Chọn B
Giải thích các bước giải:
An học tiếng việt hết số thời gian là :
`1` giờ `15` phút `-25` phút `=50` phút
An học xong toán và tiếng việt hết số thời gian là :
`1` giờ `15` phút `+50` phút `=2` giờ `5` phút
`=>` chọn `B`
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