Question 45
A box has coins and beads, all of which are either silver or gold. Twenty percent of the objects in the box are beads. Forty percent of the coins in the box are silver. What percent of the objects in the box are gold coins?
Solution
Let the total number of objects in the box be "p". 0.2p objects are beads and 0.8p are coins. Out of 0.8p, 0.4(0.8p) or 0.32p coins are silver and 0.48p are gold coins.
Hence 48% of the total objects are gold coins.
