A lawn service can cut 45 lawns in 12 hours at this rate how many be 8 hours?

First, we need to find the rate at which the lawn service can cut lawns. To do this, we can divide the number of lawns cut (45) by the number of hours it took (12).

Rate: 45/12 = 3.75 lawns per hour.

Next, we need to multiply this rate by the number of hours the lawn service will work for (8).

Number of lawns in 8 hours: 3.75 lawns/hour x 8 hours = 30 lawns.

So, the lawn service can cut 30 lawns in 8 hours at the given rate.