Answer: 3 cookies
Step-by-step explanation:
Let each friend get cookies = x
If there are 7 friends in the picnic, then the cookies are eaten by friends = 7x
Since, after distributing the cookies 3 cookies left,
Thus, the total number of cookies = 7x + 3
But, the total number of cookies = 24
⇒ 7x + 3 = 24
⇒ 7x = 21
⇒ x = 3
Hence, one friend gets cookies = 3.