Question

tìm k biết

37.5% * k + 248.5 / 5 = 50

giải rõ ràng nha

ai mink tick

Answer 1

37,5%*k= 50+248,5/5

37,5%*k=997/10

3/8*k=997/10

k=(997/10)/(3/8)

k=3998/15

k mik

Answer 2

\(37,5\%\cdot k+248,5:5=50\)

\(\Leftrightarrow\frac{37,5}{100}\cdot k+248,5:5=50\)

\(\Leftrightarrow\frac{37,5}{100}\cdot k+49,7=50\)

\(\Leftrightarrow\frac{37,5}{100}\cdot k=50-49,7\)

\(\Rightarrow0,375\cdot k=0,3\)

\(\Rightarrow k=0,3:0,375=0,8\)

Answer 3

37,5%*k= 50+248,5/5

37,5%*k=997/10

3/8*k=997/10

k=(997/10)/(3/8)

k=3998/15