Final answer:
To divide 12 by 1 1/5, convert the mixed number to an improper fraction, multiply by the reciprocal, and simplify the result.
Step-by-step explanation:
To divide 12 by 1 1/5, we need to convert the mixed number 1 1/5 into an improper fraction. Multiplying the whole number by the denominator and adding the numerator, we get 6/5. Now, we can rewrite the division problem as 12 / (6/5). To divide by a fraction, we multiply by its reciprocal. So, we multiply 12 by 5/6, which equals 60/6. Finally, we reduce the fraction to the lowest terms, which gives us the quotient 10.