Question
P5.ST.JC.18121195-A1
The average cost of 9 books is $60.
After 2 new books are added,
the average cost of all the books is $50.
  1. What is the total cost of the 2 books that are added?
  2. What is the average cost of the 2 books that are added?
3 m
(a)
∑

Click ∑ button first when a symbol is required. X

(b)
∑

Click ∑ button first when a symbol is required. X

Symbols

Enter the numerator and denominator


Enter value


2
Question Solution

1-minute grace period



When you click the Next button, you will be given 1-minute grace period to decide whether to do the next question type.

The question will be marked as incorrect if you exceed 1 minute and leave the question page.

Click the Back button instead if you would like to return to the topic page.

STUDENT

Primary 5 STRATEGIES P5.ST.JC.18121195

16 May 2024, 04:17 PM

The average cost of 9 books is $60.
After 2 new books are added,
the average cost of all the books is $50.
  1. What is the total cost of the 2 books that are added?
  2. What is the average cost of the 2 books that are added?
Navigations
Contact Us
Members
Links