The rule for the number of fish in a home aquarium is 1 gallon of water for each inch of fish length. Marta's aquarium holds 16 gallons of water and Hank's aquarium hold 20 gallons of water. The aquarium
holds two types of fish, fish A and fish B. If Marta bought 3 of fish A and 2 of fish B, and Hank bought 3 of
fish A and 4 of fish B, how long is fish A and how long is fish B?
Fish A measures
inches in length, and fish B measures
inches in length.