Answer: Charlie can spend $4 on each of the sandwich.
Step-by-step explanation: Given that Charlie wants to order lunch for his friends. He’ll order 6 sandwich’s and a $3 kids meal for his little brother.
Charlie had $27.
We are to find the amount that he can spend on each sandwich if they all the same price.
Let $x be the price that Charlie can spend on each sandwich.
Then, according to the given information, we have

Thus, Charlie can spend $4 on each of the sandwich.