SASMO 2027 · Grades 4-5 · SET 002 · Self-study Question 8

(SASMO 2018) The average number of candies of Philip and Ferb is 20. The average for Ferb and Cindy is 15. The average for Cindy and Issac is 18. Find the average number of candies of Issac and Philip.



Enter the numerical answer only.