1. ## algebra precent problem

1.) 25% of a number is less than 18% of 650 by 19. what is the number?

2.) If the bases of two similar triangles are in the ratio of 2:3, then is what ratio are their ares?

2. Originally Posted by Mr.Green
1.) 25% of a number is less than 18% of 650 by 19. what is the number?

2.) If the bases of two similar triangles are in the ratio of 2:3, then is what ratio are their ares?
1) .25x + 19 = .18(650)

2) If two similar triangles have a scale factor of $\frac{a}{b}$, then the ratio of their areas is $\frac{a^2}{b^2}$.

$\frac{A_1}{A_2}=\frac{2^2}{3^2}=\frac{4}{9}$