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The first stage of a rocket burns 28 seconds longer than the socond stage. If the total burning time for both stages is 152 seconds.How long does each stage burn?
Wiki User
∙ 13y ago
Ok if:
X is the time rocket 1 burns
Y is the time rocket 2 burns
If stage 1 burns 28 seconds longer than stage 2
X = Y + 28
If the total for both stages is 152 seconds
X + Y = 152
We can substitute Y + 28 where we see X
Y + 28 + Y = 152
2 Y = 152 - 28
2 Y = 124
Y = 62
Then we can substitute 62 into where there is a Y
X + 62 = 152
X = 152 - 62
X = 90
So statge 1 (X) is 90 seconds and stage 2 (Y) is 62 seconds
Wiki User
∙ 13y ago
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