When you're working in base 7, maybe?

50 plus 50 plus 50 equal 150

100 minutes = 1 hour 40 minutes.

100% of 50 is equal to 50.

x + 50 = 2x + 100 50 = 2x+100-x 50 = x + 100 50-100=x -50=x -50+50=0 -100+100=0 it is zero

122 is the answer, NOT 142(as the previous poster said, which is wrong.) This is why: 35+47=82 82-10=72 72-50=22 22+100=122

100 + 50 + 100000000 = 100000150

70 + 70 + 50 + 50 = 240

100 plus 50=150. 150+20=170.

1 100 + 50 + 90 + 45 _____ 285

The sum of 70 + 30 + 1250 + 50 + 100 = 1500

456 plus 100 is equal to 556

100 + 0.08N = 50 + 0.16N 100 - 50 = 0.16N - 0.08N 50 = 0.08N N = 50/0.08 N = 625

If you have a number, for example, 100, and add 50 percent, this is equal to 100 + 50 = 150. If you then increase the number 150 by 50 percent, you will get 150 + 75 = 225. Therefore, this is not the same as doubling. by ayaz khan

60 + 60 + 60 + 50 + 50 + 40 + 30 = 350

They are: 50+50 =100 or 10 times 10 = 100