This is a question where assuming some variables smartly may help speed up the solution.
Since the production cost increased by 25%, let’s assume the production cost as 4x. Therefore, new production cost after the increase = 4x(1+\(\frac{1}{4}\) ) = 5x.
Similarly, since the testing cost increased by 20%, let’s assume the testing cost as 5y. Therefore, new testing cost after the increase = 5y (1+\(\frac{1}{5}\) = 6y.
The old manufacturing cost will be 4x + 5y and the new manufacturing cost will be 5x + 6y.
We
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Since the production cost increased by 25%, let’s assume the production cost as 4x. Therefore, new production cost after the increase = 4x(1+\(\frac{1}{4}\) ) = 5x.
Similarly, since the testing cost increased by 20%, let’s assume the testing cost as 5y. Therefore, new testing cost after the increase = 5y (1+\(\frac{1}{5}\) = 6y.
The old manufacturing cost will be 4x + 5y and the new manufacturing cost will be 5x + 6y.
We
...
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