Lượng muối trong nước biển là:
2,8 : 80 x 100 = 4,5 %
tỉ số % của lượng muối trong biển là :
2,8x100:80=3,5%
Tỉ lệ % của lượng muối : ( trong bien . )
2,8 x 100 : 80 = 3,5 ( % )
Đáp số : 35%
Tỉ số phần trăm của lượng muối trong nước biển là :
2,8 x 100 : 80 = 3,5 ( % )
Đáp số : 3,5 %
~ Chúc bạn học giỏi ! ~
Tỉ số lượng muối trong nước biển là :
\(\frac{2,8}{80}.100=3,5\%\)
vậy
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Bài giải
Tỉ số phần trăm của lượng muối trong nước biển là :
28 x 100 : 80 = 3,5 ( %)
Đáp số : 3,5 %
Tỉ số phần trăm của lượng muối trong nước biển là :
2,8 x 100 : 80 = 3,5 %
Đáp số : 3,5 %