Question
Julie used 78 pearls to make a necklace. She used 2 white pearls for every 4 black pearls to form the following pattern. What was the total number of black pearls she used?
3 m

Click button first when a symbol is required. X

Julie used 78 pearls to make a necklace. She used 2 white pearls for every 4 black pearls to form the following pattern. What was the total number of black pearls she used?