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Algebra_4

Chapter 78

Problem 2

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The technitian guessed he needed to add kg of chlorine
to the water. This was times the amount actually needed.
Find the actual amount (Cl) needed.


The amount needed Cl = kg.


Example:

Bill guessed there were 50 marbles in the bag.
This was 5 times the actual number of marbles in the bag.
Find the actual number of marbles (M) in the bag.

Solution: This can be written in shorthand form as:

click refresh (F5)

Solving for M gives click refresh (F5) marbles

Thus, there were actually 10 marbles in the bag.