Universal Studios sold the Mamma Mia! DVD around the world. Universal charged $21.40 in Canada and $32

Question:

Universal Studios sold the Mamma Mia! DVD around the world. Universal charged $21.40 in Canada and $32 in Japan-more than the $20 it charged in the United States. Given that Universal had a constant marginal cost of $1, determine what the elasticities of demand must be in Canada and in Japan if Universal was profit maximizing?