Let the number which when multiplied by 15 is increased by 280. Pick
A) 14
B) 20
C) 26
D) 28
E) 30
Solution   Let the number be x .   Then, 15x - x = 280   ‹=›14x = 280   x ‹=› 20.   Answer 20
<result>B</result>
Let the number which when multiplied by 15 is increased by 280.