Lenny is making his own laundry soap. The recipe calls for 2 parts borax, 2 parts washing soda, and 1 part soap flakes. If Lenny uses 7 cups of soap flakes, how many cups of borax and washing soda combined does he need? (1 point)
O 7 cups
O 14 cups
21 cups
O28 cups
The ratio given for the recipe is 2 parts borax to 2 parts washing soda to 1 part soap flakes.
Since Lenny uses 7 cups of soap flakes, we can determine the amount of borax and washing soda by multiplying the ratio by the number of cups of soap flakes.
For the borax and washing soda combined, we have:
2 + 2 = 4 parts (borax + washing soda)
To find the total number of cups for the borax and washing soda combined, we multiply the ratio (4 parts) by the number of cups of soap flakes:
4 * 7 = <<4*7=28>>28 cups
Therefore, Lenny needs 28 cups of borax and washing soda combined.
To determine the total amount of borax and washing soda combined, we need to calculate the total number of cups for each ingredient.
Given that Lenny uses 7 cups of soap flakes, we can determine the other two ingredients using the ratio provided in the recipe.
The ratio states that for every 1 part of soap flakes, we need 2 parts of borax and 2 parts of washing soda.
Therefore, the total number of cups for borax is 2 times 7, which equals 14 cups.
Similarly, the total number of cups for washing soda is also 2 times 7, which equals 14 cups.
To find the combined amount of borax and washing soda, we add both quantities together.
14 cups (borax) + 14 cups (washing soda) = 28 cups.
Hence, Lenny needs a total of 28 cups of borax and washing soda combined.
To find out how many cups of borax and washing soda Lenny needs, we first need to determine how many cups of soap flakes are considered as "1 part" in the recipe.
The recipe states that Lenny needs 2 parts borax, 2 parts washing soda, and 1 part soap flakes. Since Lenny is using 7 cups of soap flakes, we can set up the following equation:
1 part = 7 cups
Since Lenny needs 2 parts of borax and washing soda combined, we multiply both sides of the equation by 2:
2 parts = 2 * 7 cups
2 parts = 14 cups
Therefore, Lenny needs 14 cups of borax and washing soda combined. So, the correct answer is:
14 cups