a negative number times by a positive number always equals a negative number so -49x5= -245 or -50x5= -250 then -5 = -245 :)
50x1=50 And just keep adding 50 50x2=100 50x3=150 50x4=200 50x5=250 50x6=300 50x7=350 50x8=400 50x9=450 50x10=500 50x11=550 50x12=600
if it goes back and forth 2x in 5 seconds, 50 times that is 50x5 or 250 seconds, aka 3 min 10 sec