Burnt Candles

Algebra Level 3

I have 2 candles of the same length but different burning rates: one burnt in 4 hours and the other in 5 hours. Initially lighting at the same time, the lights are on for some time before being put out, and the physical length of one candle 4 times as long as than the physical length of the other.

How long in minutes have the candles been burning for?

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Burnt Candles

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100 Day Summer Challenge

Burnt Candles

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.