Question

Four - fifths of a number is greater than three - fourths of the number by 4. The number is 

A. 12 

B. 64 

C. 80 

D. 102

Answer 1

\(\frac{4}{5}\text{x}-\frac{3}{4}\text{x}=4\)

\(\Rightarrow \frac{16\text{x - 15x}}{20}=4\)

⇒ x = 80