In a group of 160 people, 90 have an age of more 30 years, and the others have an age of less than 20 years. If a person is selected at random from this group, what is the probability the person's age is less than 20? Choose the correct option:
A) 0.44  B) 0.55  C) 0.65  D) 0.75  E) 0.85
Number of people whose age is less than 20 is given by   160 - 90= 
<gadget id="calculator">160 - 90</gadget>
<output>70</output>
70   Probability P that a person selected at random from the group is less than 20 is gieven by    70 / 160= 
<gadget id="calculator"> 70 / 160</gadget>
<output>7/16 = around 0.4375</output>
0.4375 ~ 0.44   correct answer 0.44
<result>A</result>
In a group of 160 people, 90 have an age of more 30 years, and the others have an age of less than 20 years. If a person is selected at random from this group, what is the probability the person's age is less than 20?