4/5 times of a number is 4 greater than 3/4 times of the same number. Then the number is
4/5 times of a number is 4 greater than 3/4 times of the same number. Then the number is
A) 20
B) 30
C) 60
D) 80
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Correct option is (D) 80
Let the number be x.
\(\therefore\) \(\frac{4}{5}x=4+\frac34x\)
\(\Rightarrow\) \(\frac{4x}{5}-\frac{3x}4=4\)
\(\Rightarrow\) \(\frac{16x-15x}{20}=4\)
\(\Rightarrow\) x = 20 \(\times\) 4 = 80.
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