Because coins are more portable than gold bars.
(by Solomon Zelman)
Chat with our AI personalities
3 1/2+6 5/8
1/2 1/6 1/6
10 bars
can be created with vertical bars or with horizontal bars.
A picture graph, instead of using bars or lines to measure quantities, uses pictures. http://www.schools.ash.org.au/revesby/images/pg.gif here's an example