Question
The average cost of 7 dictionaries is $50.
After another dictionary that costs $90 is added,
  1. What is new total cost of all the dictionaries?
  2. What is new average cost of all the dictionaries?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

The average cost of 7 dictionaries is $50.
After another dictionary that costs $90 is added,
  1. What is new total cost of all the dictionaries?
  2. What is new average cost of all the dictionaries?