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If a person eats 9 apples in 3 days,

Question: If a person eats 9 apples in 3 days, how many apples will he eat in 15 days at the same rate?
A) 45 apples
B) 50 apples
C) 55 apples
D) 60 apples

Solution:

Step 1: Find the number of apples eaten per day.
Apples per day=9apples/3days=3apples/day
Step 2: Use the unitary method to find how many apples will be eaten in 15 days.
Apples in 15 days=3apples/day×15days=45apples

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