Homework Help: Algebra

Posted by Heidi on Tuesday, November 2, 2010 at 4:14pm.

A single-engine airplane carries enough fuel for an 8-hour flight. After the airplane has been flying for 1 h, the fuel tank begins to leak at a rate that would empty the tank in 12 h. How long after the leak begins does the plane have until it runs out of fuel?

Algebra - MathMate, Tuesday, November 2, 2010 at 6:08pm
The rest of the fuel can last 7 hours in flight, and will leak in 12 hours.
So each hour, the plane uses 1/7th of what's left, and leaks 1/12th of what's left, for a total of 19/84th of what's left.
It will therefore last 84/19 hours.

Answer this Question

Related Questions

physics - An airplane of mass 1.5x10^4kg is moving at 60m/s. The pilot then revs...
physics - An airplane of mass 1.6 x 10^4 kg is moving at 58 m/s. The pilot then ...
Physics - An airplane of mass 1.3 104 kg is moving at 64 m/s. The pilot then ...
Math - At an airport, a flight controller is in a tower 45m above the ground. ...
physics - When an airplane is in level flight, its weight is balanced by a ...
Physics - A model airplane with a mass of 0.748 kg is tethered by a wire so that...
calculus - An airplane flying west at 300 miles per hour goes over the control ...
physics - calculate the acceleration of a 2000kg single -engine airplane just ...
Math - Two airplanes at 25,000 ft above the ground are flying toward the same ...
math - an airplane is flying at a constant altitude of 28000 meters. when first ...

For Further Reading

First Name:
School Subject:
Answer: