You plug a microwave into a 20-ampere (amp) electrical circuit. The microwave use up to 12.5 amps. At most, how many amps are availible for other appliances?
20 - 12.5 = ?? amps
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To find out how many amps are available for other appliances, subtract the ampere rating of the microwave (12.5 amps) from the total ampere capacity of the circuit (20 amps).
20 - 12.5 = 7.5 amps
Therefore, at most, there are 7.5 amps available for other appliances.