There were 150 children at the track meet. 50% of the children were boys. When more boys arrived later, the percentage of girls decreased to 20%. How many boys arrived later?
original:
150 total
75 boys
75 girls
later:
75 girls is 20%
Total = 75*5 = 375
Boys = 375-75 = 300
Hope this helped. :))
=^._.^=
+80 
