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)

Question

Responses

14 cups
14 cups

21 cups
21 cups

28 cups
28 cups

7 cups
7 cups
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Answer 1

To find out how many cups of borax and washing soda combined Lenny needs, we first look at the ratio in the recipe:

• Borax: 2 parts
• Washing Soda: 2 parts
• Soap Flakes: 1 part

The total parts in the recipe can be expressed as:

• 2 (Borax) + 2 (Washing Soda) + 1 (Soap Flakes) = 5 parts

Since Lenny is using 7 cups of soap flakes, which corresponds to 1 part, we first need to determine how much 1 part is worth in terms of cups:

1 part (soap flakes) = 7 cups

Then, to find out how many cups is represented by 2 parts of either borax or washing soda:

2 parts = 2 * 7 cups = 14 cups

Since Lenny needs 2 parts of borax and 2 parts of washing soda, that makes a total of:

14 cups (borax) + 14 cups (washing soda) = 28 cups combined

Therefore, Lenny needs 28 cups of borax and washing soda combined.