46. A restaurant has 10 booths that will seat up to 4 people each. If 20 people are seated in booths, and NO booths are empty, what is the greatest possible number of booths that could be filled with 4 people ?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

For the condition that no bench is empty, we need at least one person on each bench. Then there are currently 10 people left, one person can sit on each of the 10 benches, and 3 more people can be seated on each of the 10 benches. Ask how many benches can seat four people, the maximum is 3, because 3×3 = 9 < 10.