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 15, 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.

Kyler 15 hours and 56 minutes ago

r1 and r2 not mentioned in problem at all, made it much more frustrating and time consuming than it had to be.

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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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