Hello there!

Explanation:
↓↓↓↓↓↓↓↓↓
First you had to do is switch sides of the equation.

Then you divide by t from both sides of the equation.

Simplify it should be the correct answer.

Answer⇒⇒⇒⇒⇒ r=d/t or t≠0
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-Charlie
Answer:
Step-by-step explanation:
84% of 150=126 (foreign coins)
150-126=24 (non foreign coins)