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Tho Nguyen Van
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2022-06-03 05:33:08
Đổi 2 giờ 30 phút =2,5 giờ
Tổng vận tốc của hai xe là:
120 : 2,5 = 48(km/giờ)
Vận tốc của xe ô tô là:
48 : (2 + 3) x 3 = 28,8 (km/giờ)
Vận tốc của xe gắn máy là:
48 - 28,8 = 19,2 (km/giờ)
Đáp số: 28,8km/giờ và 19,2 km/giờ
****Công thức: S: ( v1 + v2 ) =T gặp nhau*****
Quy tắc : muốn tìm thới gian gặp nhau ta lấy quãng dường chia cho tổng vận tốc của hai xe
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