What is the ratio between Astronauts who were going to only Venus and who were going only  to both Moon and Venus?

Directions (181 – 185): Study the following and answer the questions that follow: There are some Astronauts who were going to three different missions – Mars, Moon and Venus. Number of Astronauts who were going to Mars is 225, of which % Astronauts who were going to both Mars and Moon. The number of Astronauts who were going to Moon and Venus only are % greater than those who were going to all the three missions. The number of Astronauts who were going to Venus but not Moon is 185. The number of Astronauts who were going to Moon only is 95 less than those who were going to Venus but not Moon. The number of Astronauts who were going to Moon but not Mars 150. The number of Astronauts who were going to both Mars and Venus only is 75.