I can wash 48 plates in 3 minutes how many seconds will it take me to wash 12 plates

1 minute and 15 seconds

The time it will take me to wash 12 plates 45 seconds

Step-by-step explanation:

If i can wash 48 plates in 3 minutes, it means i can wash 1 plate in 3 minutes (60*3 seconds) divided by 48

That is 180 seconds/48 = the time it will take me to wash 1 plate

the time to wash 1 plate = 3.75 seconds

Then the time it will take me to wash 12 plates = 12 times the time it takes me to wash 1 plate = 12*3.75 = 45 seconds

I will therefore wash 12 plates in 45 seconds