Question
P5.ST.JC.18121202-A1
The average cost of some books is $72.
When another 8 books are added,
the total cost increases by $520.
The average cost becomes $70.
How many books are there in the end?
3 m
∑

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.18121202

30 Apr 2024, 01:29 AM

The average cost of some books is $72.
When another 8 books are added,
the total cost increases by $520.
The average cost becomes $70.
How many books are there in the end?
Navigations
Contact Us
Members
Links