Use a multiplication table to find three ratios that are equivalent to the ratio 9/15

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels