0.7777X0.7X3+0.1111X2.1X3=nX3
0.7777 x 2.1 + 0.3333 x 2.1=n x 3
(0.7777+0.3333) x 2.1 = n x 3
(0.7777+0.3333) x 2.1 ÷ 3 = n x 3 ÷ 3
(0.7777+0.3333) x 0.7 = n
1.111x 0.7 = n
n=0.7777
0.7777X0.7X3+0.1111X2.1X3=nX3
0.7777 x 2.1 + 0.3333 x 2.1=n x 3
(0.7777+0.3333) x 2.1 = n x 3
(0.7777+0.3333) x 2.1 ÷ 3 = n x 3 ÷ 3
(0.7777+0.3333) x 0.7 = n
1.111x 0.7 = n
n=0.7777