If 100 dollars in one year gain 3 1/2 dollars interest, what sum will gain $38.50 cents in a year and a quarter
2 answers:
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Answer
Elena must have substracted 1/2x from both sides of the equation.
Lin must have multiplied both sides of the equation by 2
Explanation
The equation given is
For Elena to have arrived at
Then Elena must have substracted 1/2x from both sides of the equation.
That is;
For Lin to have arrived at
It shows Lin must have multiplied both sides of the equation by 2
That is;