Step-by-step explanation:
Let the number be x
From the question 60% of the number is 18
The equation is
[tex] \frac{60}{100} x = 18[/tex]
Multiply through by 100
That's
[tex]100 \times \frac{60}{100} x = 18 \times 100 \\ 60x = 1800 \\ \frac{60x}{60} = \frac{1800}{60} [/tex]
We have the final answer as
25% of the number is
[tex] \frac{25}{100} \times 30 \\ \rarr \: \frac{1}{4} \times 30 \\ \rarr \: \frac{30}{4} \: \: \: \: \: \: \: \\ \rarr \: \: \: \: \frac{15}{2} [/tex]
We have the final answer as
Hope this helps you
