\(\frac{64.50+40.100}{27.38+146.19}\)
\(=\frac{3200+4000}{1026+2774}\)
\(=\frac{7200}{3800}\)
\(=\frac{36}{19}\)
64 x 50 + 40 x 100 / 27 x 38 + 146 x 19
= 32 x 2 x 50 + 40 x 100 / 27 x 38 + 73 x 2 x 19
= 32 x 100 + 40 x 100 / 27 x 38 + 73 x 38
= 100 x ( 32 + 40) / 38 x ( 27 + 73)
= 100 x 72 / 38 x 100
= 72/38 = 36/19