The cost of one dozen bananas is 20 then 9 bananas is
18
well, 9 is 3/4 dozen, so it will cost 3/4 of 20, or 15
Or, since the unit cost as the ratio of money:bananas is constant,
x/9 = 20/12
To find the cost of 9 bananas, we first need to determine the cost of one banana. Given that the cost of one dozen bananas is 20, we can divide the total cost by the number of bananas in a dozen:
Cost of one banana = Cost of one dozen bananas / Number of bananas in a dozen
Number of bananas in a dozen = 12
Cost of one banana = 20 / 12
To find the cost of 9 bananas, we can multiply the cost of one banana by the number of bananas required:
Cost of 9 bananas = Cost of one banana * 9
Now let's calculate it:
Cost of one banana = 20 / 12 = 1.67 (approx.)
Cost of 9 bananas = 1.67 * 9 = 15.03 (approx.)
Therefore, the cost of 9 bananas is approximately 15.03.