Please help me with this question. (100 points)

8 pounds

Step-by-step explanation:

Ratio of C:N = 30:1C - carbon content, N - nitrogen contentGivenCoffee grounds = 1 pound contains 25% C and 1% NRotten vegetables = 6 pounds  contains 10% C and 1% NDry leaves = ?  pound  contains  30% C and 0.5% NSolution

Coffee grounds and Rotten vegetables together give:

1 + 6 = 7 poundsC = 1*0.25 + 6*0.1 = 0.25 + 0.6 = 0.85N = 1*0.01 + 6*0.01 = 0.01 + 0.06 = 0.07

Add dry leaves of x pounds:

Total = 7 + xC = 0.85 + 0.3xN = 0.07 + 0.05x

Finding required weight of dry leaves:

(0.85 + 0.3x)/(0.07+0.005x) = 30/10.85 + 0.3x = 30(0.07 + 0.005x)0.85 + 0.3x = 2.1 + 0.15x0.3x - 0.15x = 2.1 - 0.850.15x = 1. 25x = 1.25/0.15x = 8.33 pounds = 8 pounds rounded to nearest pound

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)