Dodo has twice as many green pencils as red pencils. WHEN DODO LOST 42 green pencils he had half as many greens pencils as red pencils. How many pencils did he have altogether?
+36916 g = 2 r
r
2r-42 = 1/2 r
3/2 r = 42
r = 28 g = 2r = 56 56 + 28 = number of pencils originally 56 + 28 - 42 = pencils after he lost 42
