Question
P5.ST.JC.18121203-A1
The average cost of some books is $40.
When a book that costs $76 is added,
the average cost of the books becomes $43.
How many books are there in the end?
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Primary 5 STRATEGIES P5.ST.JC.18121203

02 May 2024, 06:13 PM

The average cost of some books is $40.
When a book that costs $76 is added,
the average cost of the books becomes $43.
How many books are there in the end?
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