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The Sleep Patterns of Two Twins

Introduction

Two twins lived their lives with differing sleep schedules. One twin consistently slept for 8 hours each day, while the other managed with just 6 hours. This routine continued until they both reached the age of 72.

Calculating Sleep Duration

To determine how many years each twin spent sleeping, we can analyze their daily sleep hours in relation to their lifespan.

Sleep Duration of the First Twin

The first twin, who slept for 8 hours a day, spent one-third of his life sleeping. Over the course of 72 years, this amounts to:
72 years / 3 = 24 years of sleep.

Sleep Duration of the Second Twin

In contrast, the second twin slept for 6 hours each day, which is one-quarter of his life. Thus, his total sleep duration over 72 years is:
72 years / 4 = 18 years of sleep.

Conclusion

In summary, the first twin spent 24 years sleeping, while the second twin spent 18 years asleep.