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
28 cups
28 cups
14 cups
14 cups
21 cups
21 cups
7 cups
The recipe calls for 2 parts borax and 2 parts washing soda for every 1 part soap flakes. Since Lenny is using 7 cups of soap flakes, he needs 2 parts borax and 2 parts washing soda for a total of 4 parts.
If 7 cups of soap flakes represent 1 part, then 4 parts represent 7 x 4 = 28 cups.
Therefore, Lenny needs a combined total of 28 cups of borax and washing soda.