A housekeeper mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make green paint. Which ratio of gallons of blue paint to gallons to gallons of yellow paint will make the same shade of green paint?

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?