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
A 7 cups
B 28 cups
C 14 cups
D 21 cups
The recipe calls for 2 parts borax and 2 parts washing soda, so Lenny needs a total of 4 parts of these ingredients combined. Since 1 part is equal to 7 cups of soap flakes, Lenny needs to multiply 7 cups by 4 parts to find the total amount of borax and washing soda he needs.
7 cups * 4 parts = 28 cups
Therefore, Lenny needs 28 cups of borax and washing soda combined.
The correct answer is B) 28 cups.