Respuesta :
So:
brush = comb+2
Total: comb + (comb+2) = 3.78
2 * comb + 2 = 3.78 /-2
2 * comb = 1.78 /divide by 2
comb = 0.89
brush = 0.89 + 2 = 2.89
brush = comb+2
Total: comb + (comb+2) = 3.78
2 * comb + 2 = 3.78 /-2
2 * comb = 1.78 /divide by 2
comb = 0.89
brush = 0.89 + 2 = 2.89