Each gift certificate sold yesterday by a certain bookstore cost either $10 or $50. If yesterday the bookstore sold more than 5 gift certificates that cost $50 each, what was the total number of gift certificates sold yesterday by the bookstore?
(1) Yesterday the bookstore sold fewer than 10 gift certificates that cost $10 each.
(2) The total cost of gift certificates sold yesterday by the bookstore was $460.
(1) Yesterday the bookstore sold fewer than 10 gift certificates that cost $10 each.
(2) The total cost of gift certificates sold yesterday by the bookstore was $460.