HELP !! CONGRUENCE THEOREMS GEOMETRY

questions
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You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b