Ivin and Justin are best of friends and both are seafarers onboard on different ships. Ivin is on MV Calcula while Justin is on M/V Matematika. MN Calcula is 20 miles west of M/V Matematika If MAV...

Extracted text: Ivin and Justin are best of friends and both are seafarers onboard on different ships. Ivin is on MV Calcula while Justin is on M/V Matematika. MN Calcula is 20 miles west of M/V Matematika If MAV Calcula is sailing east at 10 miles per hour at the same time MAV Matematika is saling north at 30 miles per hour, find the rate of change of the distance between them at the end of 1 hour.