When 17 is added to a positive number, the result is equal to 60times the reciprocal of that number. Find the number.
3
10
17
20
16
Let the number be x.
Then, x+17=60x⇔x2+17x−60=0⇔(x+20)(x−3)=0⇔x=3.
4 when subtracted from a positive number gives a value equal to 21 times the reciprocal of the number. The number is:
A positive number when decreased by 6, is equal to 27 times the reciprocal of the number. The number is.