Name: Hard SAT Math Question 47 — Video Explanation
Uploaded: 2026-07-26
Description: Step-by-step video walkthrough of question 47 from the 100 hardest Digital SAT Math questions.

Data set A contains the lengths of

120

lizards and has a mean of

10

inches. Data set B contains the lengths of

40

different lizards, with a mean of

15

inches. Data set C contains the lengths of all

160

lizards from data sets A and B. What is the mean, in inches, of Data set C?