If 120% of a is equal to 80% of b, then what is the value of a+b in terms of a and b?

Answer

As per the statement:

If 120% of a is equal to 80% of b.

"120% of a" means

"80% of b" means

then;

Multiply both sides by 100 we get;

Divide both sides by 80 we have;

Simplify:

       .....[1]

or

   ......[2]

We have to find the value of a+b in terms of a and b:

Substitute the values of [1] we have;

Combine like terms;

Now, find the value of a+b in terms of b;

Substitute equation [2] we have;

Combine like terms;

Therefore, the value of a+b in terms of a and b are;

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step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square