You dont have javascript enabled! Please enable it! Solution: When the balloon is 40ft. from A, what rate is its distance changing?

# Solution: When the balloon is 40ft. from A, what rate is its distance changing?

#### Problem Statement: ECE Board April 1998

A balloon is rising vertically over 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

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

View Solution:

Subscribe To Unlock The Content! and Remove Ads.

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

Also Questions in: Differential Calculus (LIMITS & DERIVATIVES)

#### Online Questions and Answers in Differential Calculus (LIMITS & DERIVATIVES)

P inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Also provides professionals with materials for their lectures and practice exams. Help me go forward with the same spirit.

โWill you subscribe today via YOUTUBE?โ

Subscribe

• Full Content Access Exclusive to Premium members

## PINOYBIX FREEBIES FOR PREMIUM MEMBERSHIP:

• CIVIL ENGINEERING REVIEWER
• CIVIL SERVICE EXAM REVIEWER
• CRIMINOLOGY REVIEWER
• ELECTRONICS ENGINEERING REVIEWER (ECE/ECT)
• ELECTRICAL ENGINEERING & RME REVIEWER
• FIRE OFFICER EXAMINATION REVIEWER
• LET REVIEWER
• MASTER PLUMBER REVIEWER
• MECHANICAL ENGINEERING REVIEWER
• NAPOLCOM REVIEWER

## FOR A LIMITED TIME

If you subscribe for PREMIUM today!