The ratio given for the recipe is 2 parts borax to 2 parts washing soda to 1 part soap flakes.
Since Lenny uses 7 cups of soap flakes, we can determine the amount of borax and washing soda by multiplying the ratio by the number of cups of soap flakes.
For the borax and washing soda combined, we have:
2 + 2 = 4 parts (borax + washing soda)
To find the total number of cups for the borax and washing soda combined, we multiply the ratio (4 parts) by the number of cups of soap flakes:
4 * 7 = <<4*7=28>>28 cups
Therefore, Lenny needs 28 cups of borax and washing soda combined.
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)
O 7 cups
O 14 cups
21 cups
O28 cups
1 answer