The ratio of Olivia's allowance to Sylvia's allowance is 2 : 3.
If Sylvia gets $21, Olivia gets 2/3 * $21 = $<<2/3*21=14>>14. Answer: \boxed{14}.
Best friends Olivia and Sylivia both get a weekly allowance. Olivia's and Sylvia's allowances are in the ration 2 : 3. If Sylvia gets $21 one week, how much did Olivia get?
1 answer