A number whose fifth part increased by 4 is equal to its fourth part diminished by 10, is :
Answers.
A) 240	B) 260	C) 270	D) 280	E) 290

Rationale: let the number be x . then , ( ( 1 / 5 ) x + 4 ) = ( ( 1 / 4 ) x − 10 ) < = > x / 20 < = > x = 14 * 20 = 280 . answer : d
Answer: D