Lidya and Nanda each have a sum of money. The ratio of the amount of money Lidya has to that of Nanda is 3:5. After Nanda gives $ 150 to Lidya , the ratio of the amount of money Lidya has to that of Nanda becomes 7:9. Find the sum of money Lidya had initially?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Tell whether the two rates form a proportion