Answer:
a) 2.5
b) x = 10
Step-by-step explanation:
[tex]a) \: \frac{10}{4} = \frac{5}{2} = 2.5[/tex]
[tex]b) \frac{10}{4} = \frac{25}{x} \\ \\ 10x = 25 \times 4 \\ 10x = 100 \\ \\ x = \frac{100}{10} = 10 \\ \\ x = 10[/tex]
I hope I helped you^_^
