A compound microscope has an objective of focal length 1.0 cm and an eyepiece of focal length 4.0 cm. An object is placed 1.2 cm in front of the objective, and the eyepiece is adjusted so that the final image forms at the least distance of distinct vision, 25 cm from the eyepiece (the eye is held close to the eyepiece). What is the magnitude of the magnifying power?