About how long will a 0.5-solar-mass star spend on the main sequence?

Name: About how long will a 0.5-solar-mass star spend on the main sequence?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

A 0.5-solar-mass star, being smaller and cooler than the Sun, burns its nuclear fuel more slowly. Therefore, it will spend a significantly longer time on the main sequence compared to the Sun's estimated 10 billion years. The correct answer is 50 billion years, as lower mass stars have longer main sequence lifetimes.

About How Long Will a 0