Minh co cau do muon cac ban giai gium. Tai minh giai ma nguoi ta ko nghe, no rat hap dan day cac ban thu suc nha. Caudo nhu sau: Co 3 chang trai va 1 co gai di uong tra, sau khi uong xong chu quan keu het 25k, moi chang trai rut trongtui ra 10k dem ra thanh toan, chu quan tra lai 5k. Co gai cam 5k do chia cho 3 chang trai moi nguoi 1k, con 2k thi cocam. Nhu vay la moi chang trai chi mat 9k, 9kx3=27k,27k+2k(co gai cam)=29k! Hoi 1k nua di dau ? Ai tra loi duoc thi click vao link ben duoi roi write dap an gium minh nhe ! thankyou<>Ban giup minh tra loi nhe<>Counter: 1/399
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