I need to sum a number over loop : Sum over loop

    base_times=14
    base_times.times do |i|
    x=3
    x = x + 2,50
    puts "#{x}"
    end

I want to iterate 14 times and on each time sum 2.50 to x, so i=0 > x=5.5, i=1 > x=8, i=2 > x=10.5, i=3 > x=13, and so on....

