Question

There are a total of 18 chairs . If the ratio of the red chairs to brown chairs is 2 to 4 , how many of them are red

Answer 1

So 18 chairs altogether.
Red : Brown
 2    :    4
2+4= 6                
18 / 6 = 3
3 x 2 = 6          3 x 4 = 12
6 red chairs and 12 brown chairs. To make sure it's right add them 12+6=18