Find 3 consecutive integers if the sum of the first and third is 128

X + x + 2 = 128
2x + 2 = 128
2x = 126
x = 63

numbers are: 63, 64, 65

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho