Answered

Welcome to Westonci.ca, your ultimate destination for finding answers to a wide range of questions from experts. Experience the ease of finding quick and accurate answers to your questions from professionals on our platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

The mean of 19 numbers is 17. An extra number is included and the mean increases to 23. What is the extra number?

Sagot :

Answer:

Extra number = (23×20) - (19×17)

= 137