Lenny's making his own laundry soap. The recipe calls for two parts borax, two parts washing soda, one part soap flakes. If money uses 7 cups of soap flakes, how many cups of borax and washing soda combined does he need
A. 14 cups
B. 28 cups
C. 7 cups
D. 21 cups
The recipe calls for two parts borax, two parts washing soda, and one part soap flakes. Since Lenny uses 7 cups of soap flakes, he will need:
- 2 parts borax: 2 * 7 = 14 cups of borax
- 2 parts washing soda: 2 * 7 = 14 cups of washing soda
Therefore, he will need a total of 14 + 14 = 28 cups of borax and washing soda combined.
The correct answer is B. 28 cups.