asked 28.6k views
9 votes
kofi bought 4books at an average price of $2500 .if you the total cost of 3 books was $6500 .find the cost of the fourth book​

asked
User Anvoz
by
7.9k points

2 Answers

3 votes

Final answer:

To find the cost of the fourth book, subtract the total cost of the three books from the total cost of all four books.

Step-by-step explanation:

To find the cost of the fourth book, we need to subtract the total cost of the three books from the total cost of all four books.

Let's assume the cost of the fourth book is x dollars.

If the average price of the four books is $2500, then the total cost of all four books would be 4 times $2500, which is $10000.

Since the total cost of the three books is given as $6500, we can set up the equation: $10000 - $6500 = $2500 + x.

Simplifying the equation, we get $3500 = $2500 + x.

Subtracting $2500 from both sides, we find that x = $1000.

Therefore, the cost of the fourth book is $1000.

answered
User Isick
by
8.2k points
3 votes
6500 divided by 3 is 2166 2/3 and it works the other way around to 2166 2/3 multiplied by 3 = 6500 so the forth book would cost 2166 2/3 ps this is in fraction form
answered
User Martien De Jong
by
7.8k points
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