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The time required for an elevator to lift a weight varies directly with the weight and the distance through which it is to be lifted and inversely as the power of the motors. If it takes 20 seconds for a 5-hp motor to lift 50 lbs. through 40 feet, what weight can an 80- hp motor lift through a distance of 40 feet within 30 seconds? Select one: Ⓒa. 1150 lbs. Ob. 1000 lbs. c. 1175 lbs. d. 1200 lbs.

The time required for an elevator to lift a weight varies directly with the weight and the distance through which it is to be lifted and inversely as the power of the motors. If it takes 20 seconds for a 5-hp motor to lift 50 lbs. through 40 feet, what weight can an 80- hp motor lift through a distance of 40 feet within 30 seconds? Select one: Ⓒa. 1150 lbs. Ob. 1000 lbs. c. 1175 lbs. d. 1200 lbs.

Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
Problem 8P
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Subject: Integral Calculus

The time required for an elevator to lift a weight varies directly with the weight and the distance through which it is to be lifted and inversely as the power of the motors. If it takes 20 seconds for a 5-hp motor to lift 50 lbs. through 40 feet, what weight can an 80- hp motor lift through a distance of 40 feet within 30 seconds? Select one: a. 1150 lbs. O b. 1000 lbs. c. 1175 lbs. d. 1200 lbs.
Transcribed Image Text:The time required for an elevator to lift a weight varies directly with the weight and the distance through which it is to be lifted and inversely as the power of the motors. If it takes 20 seconds for a 5-hp motor to lift 50 lbs. through 40 feet, what weight can an 80- hp motor lift through a distance of 40 feet within 30 seconds? Select one: a. 1150 lbs. O b. 1000 lbs. c. 1175 lbs. d. 1200 lbs.
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