A listener is standing on a ground that is non-absorbing. Situated at a distance from the listener are two sound sources such that: source A has a sound power of 5 W and 15 m from the listener and source B has a power of 15 W and 25 m from the listener. What is the sound pressure level the listener would hear

A listener is standing on a ground that is non-absorbing. Situated at a distance from the listener are two sound sources such that: source A has a sound power of 5 W and 15 m from the listener and source B has a power of 15 W and 25 m from the listener. What is the sound pressure level the listener would hear