angelia is painting her room. she wants a very specific shade of bright blue paint so she mixes green and blue paint in a ratio of 2:1 if she needs 6 gallons of paint how many galloons of blue should she buy ? use a tape diagram to help organize your thinking
To solve this problem, we can create a tape diagram to visualize the ratio and calculate the amount of blue paint Angelia should buy. Let's represent each unit in the ratio as a gallon.
Green paint: Blue paint:
--------- ---------
2 gallons 1 gallon
The total ratio is 2+1 = 3 units.
Since Angelia needs 6 gallons of paint in total, we can divide it equally among the units in the ratio: 6 gallons / 3 units = 2 gallons per unit.
Therefore, for each unit of blue paint, Angelia needs 2 gallons.
To find out how many gallons of blue paint she should buy, we can multiply the number of units of blue paint by the amount of blue paint per unit:
1 unit * 2 gallons per unit = 2 gallons
Therefore, Angelia should buy 2 gallons of blue paint.