40% of 265 + 35% of 180 = 50% of ?

We know that 40% =  $\frac{2}{5}$

40% of 265 + 35% of 180 = 50% ?

$\frac{2}{5}$ x 265 + 35% of 180 = 50% ?

We know that (35% of 180 = 180% of 35) & 180% =  $\frac{9}{5}$

$\frac{2}{5}$ x 265 +  $\frac{9}{5}$ x 35 = 50% ?

106 + 63 = 50% ?

?= 2 x 169 = 338.