Asap plz decrease 1). 400 by 10% 2). 380 by 10% 3). 140 by 15% 4). 35 by 20%.

1)360 (400*.9)
2)342 (380*.9)
3)119 (140*.85)
4)28 (35*.8)

In the given problem most of the required information’s are already provided. Based on these information’s the correct answer to the problem can be easily deduced.
For making 12 ounces of hot chocolate the number of tablespoons of cocoa required = 3
Then Number of tablespoons of cocoa required to make
72 ounces of hot chocolate = (3/12) * 72
                                             = 3 * 6
                                             = 18
So 18 tablespoons of cocoa are required to make 72 ounces of hot chocolate.