Answer:
The algebraic equations are: 120 + 120 × d% = 120 + x and 120 + 120 × 25% = 150
Explanation:
The given number is 120 that is first increased by d% and then increased by 25%. So there is two algebraic equation, in the first equation the given amount 120 will be increased by d% and in the second algebraic equation, the given amount 120 will be increased by 25 percent.
Let the amount by which the 120 is increased = “x” in the case of the first equation.
120 + 120 × d% = 120 + x
Second algebraic equation.
120 + 120 × 25% = 150