Problem 1299. How long do each of the stages of the rocket take to burn?

Created by Bruce Raine

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A space rocket has 3 stages:

- stage 1, s1;

- stage 2, s2;

- stage 3, s3.

If s1 burns 3 x as long as s2 which burns 2 x as long as s3 then how long did s3 burn if the total burn time was tt minutes? How long did s2 burn? s1?

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Last Solution submitted on Dec 08, 2025

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redlonghead on 22 Sep 2022

The main problem is the r1 and r2 not being explained but I loved it once I knew what those were supposed to be.

alex on 28 Apr 2025

yogurt

Michael on 1 Dec 2025 at 19:22

r1 and r2 aren't mentioned in the problem at all, and they're crucial to the grading. When it says "s2 is 2*s1", that (2) is variable and is equal to r2.

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Problem 1299. How long do each of the stages of the rocket take to burn?

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Problem 1299. How long do each of the stages of the rocket take to burn?

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