Will give brainliest
need quickly pls
1. the chemicals in my swimming pool use a ratio of 5 tablets of chlorine for every 14 days. which ratio shows the number of chlorine tablets needed for 42 days?
a. 14 to 42
b. 15 to 42
c. 19 to 42
d. 3 to 42

2. the chemicals in my swimming pool use a ratio of 2 tablets of chlorine for every 5 days. which ratio shows the number of chlorine tablets needed for 20 days?
a. 5 to 20
b. 8 to 20
c. 7 to 20
d. 3 to 20

3. find the ratio that is equivalent to 10: 5.
a. 15: 5
b. 5: 10
c. 2: 1
d. 5: 1