Concept explainers
To find: the time at which main engine and reserve engine both run together.
Answer to Problem 4ST
The
Explanation of Solution
Given:
The main engine on a rocket can use up the fuel in
The reserve engine can use it up in
Concept used:
Fraction can be solved by taking L.C.M.
The equation will be:
Calculation:
According to the given data:
The main engine on a rocket can use up the fuel in
The reserve engine can use it up in
Let
The equation will be:
By solving the fraction using L.C.M:
Dividing both side by
Hence the
Chapter 7 Solutions
Algebra: Structure And Method, Book 1
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