Question

A classroom can seat 120 students in desks that can seat either 2 or 4 students.If there are 21 desks that can seat 4 students ,how many desks are there that can seat 2 students?

Answer 1

Answer:

18

Step-by-step explanation:

Total seats=120

 Total chairs with four seats=21

  so total seats we are given=21*4=84

No. of  seats left=120-84=36

Desks with 2 seats=36/2=18

 18 desks are there which can seat 2 students.