#### Problem Statement: ECE Board April 1998

A balloon is rising vertically over a point A on the ground at the rate of 15 ft./sec. A point B on the ground level with and 30 ft. from A. When the balloon is 40 ft. from A, at what rate is its distance from B changing?- A. 13 ft/sec
- B. 15 ft/sec
- C. 12 ft/sec
- D. 10 ft/sec

#### Problem Answer:

The rate of the distance changing from B is **12 ft/sec**

### Latest Problem Solving in Differential Calculus (MAXIMA-MINIMA & TIME RATES)

More Questions in: Differential Calculus (MAXIMA-MINIMA & TIME RATES)

## Post a Comment