Final answer:
To write '67 r 45' as a mixed number, one needs to know the divisor. Assuming it is greater than 45, you would write the whole number 67 and the remainder as a fraction with the divisor as the denominator, combining them to form a mixed number, like '67 45/D'. Without the divisor, one cannot provide a specific mixed number.
Step-by-step explanation:
The notation '67 r 45' typically means 67 remainder 45, which comes from division where 45 is the amount left over after dividing by some number. To write '67 r 45' as a mixed number, you need to know the divisor (the number that 67 was divided by). Assuming that the divisor is a number greater than 45 (since a remainder must be smaller than the divisor), you can convert the remainder into a fraction by putting it over the divisor. Here's a step-by-step explanation:
Start with the whole number part of the mixed number, which is 67.
Turn the remainder into a fraction by using the divisor (which we'll call D); the remainder is the numerator (top part of the fraction) and D is the denominator (bottom part of the fraction), resulting in the fraction 45/D.
Combine the whole number and the fraction to form the mixed number: 67 45/D.
Without knowing the actual divisor, we cannot provide a specific mixed number. For example, if the divisor was 100, the mixed number would be 67 45/100, which could be simplified to 67 9/20 after reducing the fraction.