Answer:
y=12
Step-by-step explanation: what you would do is subtract 8 from 20 and you would get 12. You wouldn't have to do anything else due to the fact that the y is now alone
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We are given that
An ion has a charge of +7
and a neutral has charge always 0
so, change is charge = ion charge - neutral change
so, we can plug values
change is charge = +7 -0
change is charge = 7
so, option-C..................Answer
1 hour is 60 minutes. The ratio of 60 minutes to 45 minutes is 4:3 .
