Two boats depart simultaneously from the same dock
MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives
Problem
Two boats depart simultaneously from the same dock. Boat A travels due east at 15 mph, while Boat B travels due north at 20 mph. How fast is the straight-line distance between the boats increasing when Boat A is 12 miles east of the dock and Boat B is 16 miles north of the dock?
(a) 18mph
(b) 12mph
(c) 25mph
(d) 24mph