Math in business

Historical facts

• William Playfair invented math in buisness in 1978
•  He was the inventor of the line graph,bar chart, ant the pie chart.
• He invented math in business because Scottish engineer,was the  
• found of graphical statistics.
• He did this in Scotland 

Examples

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Pancho had $500 in his bank account.He wanted to buy a new bike that cost $250 plus to more wheels that cost $30 each.How many money does Pancho have left?

$500-$250=$250
$250-$60=$190
Pancho would have $190 to deposit in his bank account.