Question

Solving proportion 10\8=n\10

Answer 1

`(10)/(8)=(n)/(10) \\ \hbox{cross multiply:} \\ 8n=10 * 10 \\ 8n=100 \\ n=(100)/(8) \\ n=(25)/(2) \\ n=12 (1)/(2)`

Answer 2

`\frac { 10 }{ 8 } =\frac { n }{ 10 } \\ \\ 10\cdot \frac { 10 }{ 8 } =\frac { n }{ 10 } \cdot 10\\ \\ \frac { 100 }{ 8 } =n`


`\\ \\ n=\frac { 4\cdot 25 }{ 4\cdot 2 } \\ \\ \therefore \quad n=\frac { 25 }{ 2 }`