Final answer:
Natalia dedicates 3/4 of an hour to practicing writing or reading.
Explanation:
To find the fraction of an hour Natalia dedicates to writing or reading, we need to add the time she spends on both activities. Natalia practices writing for 1/4 of an hour (15 minutes) and reading for 2/4 of an hour (30 minutes). In total, she spends 1/4 + 2/4 = 3/4 of an hour on these activities.
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