Question

Bracelets use 1/4 yard of string and 10 charms. You have 9/10 yards string and 72 charms. If you use all the string what fraction of the 72 charms did you use?

Answer 1

• 1/2 of the charms used

Explanation:

Ratio of string and charms:

• 1/4 yard of string ⇒ 10 charms
• 9/10 yard of string ⇒ x

Solve by cross-multiplication

• x = 10*9/10 ÷ 1/4
• x = 36 charms

The fraction of all charms to number of used:

• 72/36 = 1/2