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2022-04-27 18:53:02
2022-04-27 18:51:28
2022-04-25 20:37:21
2022-04-25 20:35:47
Vận tốc xe đạp là :
5 x 3 = 15 (km/giờ)
2 người cách nhau :
5 x 2,5 =12,5 ( km)
Hiệu vận tốc 2 người là :
15 - 5 = 10 (km/giờ)
2 người gặp nhau sau :
12,5 : 10 = 1,25 (giờ)
Quãng đường từ điểm khởi hành cách chỗ gạp nhau dài :
15 x 1,25 = 18,75 (km)
2022-04-25 20:14:48
9/8:3+7/8:3
=9/8.3 + 7/8.3
=9/24+7/24
=16/24=2/3
2022-04-25 20:14:07
///
2022-04-25 20:13:49
2022-04-25 20:13:42
rt
2022-04-25 20:12:29
108 , 510
2022-04-25 20:11:00
38000+15000=43000
60000-43000=17000(đồng)