A calculator has 50 keys in five colors: gray, black, blue, yellow, and green.
a. There are 6 gray keys for every 7 blue keys. Write the possible ratios for
gray to blue keys.
b. There are 6 gray keys for every 11 black keys. Write the possible ratios
for gray to black keys.
C. There are 6 gray 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.
d. There is 1 yellow key for every 1 green key. How many keys of each
color are there?