If 2 1/2 yards of wire costs 25 cents what will 20 yards cost
20 yards * { 25 c / 2.5 yards} = 200 c = $2.00
Well, let's do some math here. If 2 1/2 yards of wire costs 25 cents, we can figure out the cost per yard by dividing the total cost by the number of yards. So, 25 cents divided by 2 1/2 yards gives us 10 cents per yard.
Now we can determine the cost of 20 yards. If 1 yard costs 10 cents, then 20 yards would cost... well, it sounds like you might need to buy a calculator, my friend.
To find out the cost of 20 yards of wire, we can set up a proportion using the given information.
Let's first calculate the cost per yard of wire:
2 1/2 yards of wire cost 25 cents.
To find the cost per yard, we divide the total cost by the number of yards:
25 cents / (2 1/2 yards) = 25 cents / (5/2 yards) = 25 cents / (5/2) = 25 cents * (2/5) = 10 cents per yard.
Now, we can calculate the total cost of 20 yards of wire using the cost per yard we just calculated:
20 yards * 10 cents per yard = 200 cents.
Therefore, 20 yards of wire will cost 200 cents.
To find out what 20 yards of wire will cost, we can set up a proportion using the given information.
We know that 2 1/2 yards of wire cost 25 cents. Let's convert 2 1/2 to an improper fraction.
2 1/2 = 5/2
So, 5/2 yards of wire cost 25 cents.
Now, let's set up a proportion with the cost and the length of the wire:
(cost of 5/2 yards) / (5/2 yards) = (cost of 20 yards) / 20 yards
Simplifying this proportion:
(cost of 5/2 yards) / 2.5 = (cost of 20 yards) / 20
Now, we can solve for the cost of 20 yards of wire.
Let's cross-multiply and solve for the unknown:
(cost of 5/2 yards) * 20 = 2.5 * (cost of 20 yards)
100/2 = 2.5 * (cost of 20 yards)
50 = 2.5 * (cost of 20 yards)
To find the cost of 20 yards, divide both sides of the equation by 2.5:
50 / 2.5 = cost of 20 yards
20 = cost of 20 yards
Therefore, 20 yards of wire will cost 20 cents.
the cost is proportional to the length
20 / 2.5 = ? / 25¢