Final answer:
Mr. Johnson has 30 apples, which is twice the number of apples Mrs. Smith has.
Step-by-step explanation:
The question is asking us to calculate how many apples Mr. Johnson has if he has twice as many as Mrs. Smith, who has 15 apples. To find the answer, we simply multiply the number of apples Mrs. Smith has by 2.
Here is the calculation:
Number of apples Mrs. Smith has = 15
Number of apples Mr. Johnson has = 15 apples Ă— 2
Number of apples Mr. Johnson has = 30 apples.
Therefore, Mr. Johnson has 30 apples.