Math
posted by Delia .
Nora had 20% fewer pictures than Maria. After Nora gave 12 pictures to Maria, she had half as many pictures as Maria. How many pictures did Nora have at first?

n = .8m
n12 = .5(m+12)
(m,n) = (60,48)
Nora had 48
Maria had 60
Later, Nora had 36 and Maria had 72