Ten thousand US$10 lottery tickets are sold. One ticket wins a prize of US$5000, five
tickets each win US$1000, and ten tickets
each wins US$200. Find:
a: The probability of winning each prize in the lottery
b: The expected gain from one ticket
c: the price of a ticket to make the lottery a
fair game

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950