September 2018 2 677 Report
Sebuah tangki bersisi 20 galon campuran alkohol dan air , dgn 40% berisi alkohol. banyaknya isi campuran yg harus di pindahkan untk mengganti air dgn isi yg sama agar menghasilkan 25% berisi alkohol adalah..
a.7,5 galon
b. 10 galon
c. 12,5 galon
d.15 galon
e. 17.5 galon
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