1. The problem statement, all variables and given/known data Humphrey the Singing Whale and his mate Matilda swim toward each other, with Matilda swimming twice as fast as Humphrey. When Humphrey sings a note of a frequency 299 Hz. Maltida hears a frequency of 302 Hz. How fast is Humphrey swimming? (The speed of sound i sea water is 1533 m/s) 2. Relevant equations f=fo(v+-vo/v-+vs) 3. The attempt at a solution v0=(fo/f)*vs and i get 1526.4 m/s the answer is 5.11 m/s I'm lost , any help?