Meredith picked four times as many green peppers as red peppers if she picked a total of 20 peppers how many green peppers did she pick

16 green pepper. There are 4 times the amount of red pepper is the green pepper, do a trial. I started with 5 so if there are 5 red peppers, 5*4=20, 20 plus 5 is too much so try 4 next. 4*4=16, 16+4 is exactly 20 pepper