Sandra earns $3 for each bead necklace that she makes. She spends all the money she earns from selling 8 necklaces on 4 books. Each book costs the same amount.
Charms cost $2 each. How many bead necklaces would Sandra have to sell to buy 9 charms?
A.
6
B.
9
C.
11
D.
12
Sandra earns $3 x 8 = $24 from selling 8 bead necklaces.
She spent all the money on 4 books, so each book cost $24 ÷ 4 = $6.
To buy 9 charms at $2 each, she would need to spend $2 x 9 = $18.
For every 1 bead necklace she sells, she earns $3, so she would need to sell $18 ÷ $3 per necklace = 6 necklaces.
Therefore, the answer is A. 6.
To find the number of bead necklaces Sandra would have to sell to buy 9 charms, we need to calculate the total amount of money she would earn from selling necklaces and then divide that amount by the cost of each charm.
First, we need to find out how much money Sandra earned from selling 8 necklaces. Each necklace earns her $3, so the total amount earned from selling 8 necklaces is 8 x $3 = $<<8*3=24>>24.
Next, we need to find out the cost of each book. Since Sandra spent all the money she earned on 4 books, the cost of each book is $24 / 4 = $<<24/4=6>>6.
Finally, we can calculate how many bead necklaces Sandra would have to sell to buy 9 charms by dividing the total cost of the charms by the earnings from each necklace. Each charm costs $2, so the total cost of 9 charms is 9 x $2 = $<<9*2=18>>18. Therefore, the number of bead necklaces Sandra would have to sell is $18 / $3 = <<18/3=6>>6.
Therefore, Sandra would have to sell 6 bead necklaces to buy 9 charms.
Therefore, the answer is A. 6.
To determine how many bead necklaces Sandra would have to sell to buy 9 charms, we need to find out the cost of 9 charms and then divide that by the amount of money Sandra makes from selling each necklace.
Since each charm costs $2, the total cost of 9 charms is 9 * $2 = $<<9*2=18>>18.
Since Sandra earns $3 for each necklace she sells, the number of necklaces she would have to sell is $18 / $3 = <<18/3=6>>6.
Therefore, Sandra would have to sell 6 bead necklaces to buy 9 charms.
The answer is A. 6.