exam Maths Puzzle Numerical Ability

I have been struggling with this problem and I was wondering if anyone could help me? I would deeply appreciate it!! Please and Thank You!!

Absolute Values of Products in Open

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exam Other Question

Three harmful pollutants were measured by a consumer group in the city. The total sample contained 15 parts per million of three harmful pollutants. The amount of the first polluta This was listed under rational expressions but it says to express the compound fraction in lowest terms.

How do I figure out the compound fraction in lowest terms?

20q^4