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4 Paula is adjusting the level of chlorine in the pool at the local community center. The
concentration of chlorine is currently 6.3 parts per million. She read in a magazine that
the ideal chlorine level is about 1.5 parts per million. How many times the ideal chlorine
level is the current chlorine level?
I
A 4.2 times
Б. 4.8 times
с 7.8 times
D. 9.5 times

Answer 1

A. 4.2 times

Explanation:

Chlorine level of the pool as adjusted by Paula = 6.3 parts per million

Ideal Chlorine level as suggested by the magazine = 1.5 parts per million.

Thus, the number of times the ideal level of Chlorine that the current level is = current level ÷ ideal level

=
`(6.3)/(1.5) = 4.2`

The current Chlorine level is 4.2 times the ideal Chlorine level.