The time (t) required to empty a tank varies inversely as the rate (r) of pumping. If a pump can empty a tank in 3 hours at a rate of 400 gallons per minute, how long will it
take to empty a tank at 600 gallons per minute?

this is poiselle's equation from fluid mechanic in physics. mech eng

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

root word, prefixes, and suffixes