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)
Responses
21 cups
21 cups
28 cups
28 cups
14 cups
14 cups
7 cups
To find out how many cups of borax and washing soda combined Lenny needs, we need to determine the total number of parts in the recipe.
The recipe calls for 2 parts borax + 2 parts washing soda + 1 part soap flakes = 5 parts in total.
Since Lenny is using 7 cups of soap flakes, 1 part is equal to 7 cups.
Therefore, the total amount of borax and washing soda combined that Lenny needs is:
2 parts borax + 2 parts washing soda = 4 parts.
Each part is equal to 7 cups, so 4 parts * 7 cups/part = 28 cups.
Lenny needs a total of 28 cups of borax and washing soda combined.
Therefore, the correct answer is:
28 cups