0.18 (5x – 4) = 0.5x + 0.8, x = ……………… A) 3 B) 3.8 C)

1.	0.18 (5x – 4) = 0.5x + 0.8, x = ……………… A) 3 B) 3.8 C) 8 D) 1.9
Answer» Correct option is B) 3.8 Correct option is (B) 3.8 0.18 (5x – 4) = 0.5x + 0.8 \(\Rightarrow\) 0.9x - 0.72 = 0.5x + 0.8 \(\Rightarrow\) 0.9x - 0.5x = 0.8+0.72 = 1.52 \(\Rightarrow\) 0.4x = 1.52 \(\Rightarrow\) \(x=\frac{1.52}{0.4}=\frac{15.2}{4}=3.8\)

0.18 (5x – 4) = 0.5x + 0.8, x = ……………… A) 3 B) 3.8 C) 8 D) 1.9

Answer»

Correct option is B) 3.8

Correct option is (B) 3.8

0.18 (5x – 4) = 0.5x + 0.8

\(\Rightarrow\) 0.9x - 0.72 = 0.5x + 0.8

\(\Rightarrow\) 0.9x - 0.5x = 0.8+0.72 = 1.52

\(\Rightarrow\) 0.4x = 1.52

\(\Rightarrow\) \(x=\frac{1.52}{0.4}=\frac{15.2}{4}=3.8\)