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)
• 21 cups
• 28 cups
O 7 cups
• 14 cups
If Lenny is using 7 cups of soap flakes, and the ratio for the recipe is 2 parts borax to 2 parts washing soda to 1 part soap flakes, he would need 2 times the amount of borax and washing soda. Therefore, he would need 2*7=<<2*7=14>>14 cups of borax and washing soda combined.
So the correct answer is 14 cups.