Posted by Chris on Wednesday, July 30, 2014 at 2:19pm.
Sam had a total of 80 foreign stamps and local stamps combined. After giving away 1/3 of his foreign stamps and 10 local stamps, he had an equal number of foreign stamps and local stamps left. How many local stamps did he have in the beginning?

math  Steve, Wednesday, July 30, 2014 at 3:18pm
f+l = 80
2/3 f = l10
so,
2/3(80l) = l  10
1602l = 3l30
190 = 5l
l = 38
check:
initially there were
38 local and 42 foreign
after removing 10 local and 14 foreign, there were 28 of each.

math  Bell, Monday, January 23, 2017 at 5:35pm
Where do you get 2/3rds from
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