Acalculator has 50 keys in 5 colors: gray, black, blue, yellow, and green. there are 6 gray keys for every 7 blue keys. write the possible ratios for gray keys to blue keys. there are 6 gray keys for every 11 black keys. writhe the possible ratios for gray to black keys. there are 6 keys for every 11 black keys. also, the number of black keys is 2 less than twice the number of gray keys. use your answer to part (b) to determine how many gray keys and how many black keys there are. there is 1 yellow key for every 1 green key. how many keys of each color is there?