Mr. Donahue needs 4 1/2 pounds of flour to make 5 loaves of bread. He bought a 50-pound bag of flour that costs $64.99. About how much will Mr. Donahue spend on flour for a loaf of bread?
A
$1.17
B
$5.85
C
$6.50
D
$58.49
how is this answer A
so cost is 1/5*4.5/50*64.99=1.17
Mr. Richards has two cars that he changes the oil in every four months.
During an oil change, each car needs 4 1/2 quarts of oil.
Each 5-quart container of oil costs $14.99.
Before tax, how much will the oil cost Mr. Richards for both cars in a year?
A
$44.97
B
$80.94
C
$89.94
D
$107.93
why is this c
To find out how much Mr. Donahue will spend on flour for a loaf of bread, we need to divide the total cost of the 50-pound bag of flour by the number of loaves of bread he can make with it.
First, let's convert 4 1/2 pounds to a decimal. We can do this by dividing the numerator (9) by the denominator (2), which gives us 4.5.
Next, let's calculate the number of loaves of bread Mr. Donahue can make with the 50-pound bag of flour. Since he needs 4.5 pounds of flour for 5 loaves of bread, each loaf requires 4.5/5 = 0.9 pounds of flour.
Now, let's calculate the cost per pound of flour. The cost of the 50-pound bag of flour is $64.99, so the cost per pound is $64.99/50 = $1.30.
Finally, let's calculate the cost of flour for a single loaf of bread. Since each loaf requires 0.9 pounds of flour, the cost for a single loaf is 0.9 * $1.30 = $1.17.
Therefore, the correct answer is A) $1.17.