To determine how many 21-cent pencils can be bought with 7 dollars, you first need to find out how many cents are in 7 dollars. Since there are 100 cents in a dollar, 7 dollars is equal to 700 cents. To find out how many pencils can be bought, divide the total amount of cents (700) by the cost of each pencil (21 cents). This calculation results in approximately 33 pencils that can be bought with 7 dollars.
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12
3x12x2=72
$0.01 in a cent
In USD (US dollars) the penny or one cent is the lowest measure used. ~
4 pencils cost 10 cents so pencils are 10/4 cents each.So 50 cents will buy 50*4/10 = 20 pencils