A store gathers some demographic information from their customers. The following chart summarizes the age-related information they collected:

Age	Number of Customers
`< 20`	95
20-30	83
30-40	66
40-50	53
50-60	63
`>=60`	61

One customer is chosen at random for a prize giveaway.

What is the probability that the customer is at least 30 but no older than 50?

What is the probability that the customer is either older than 40 or younger than 20?

What is the probability that the customer is at least 60?

Enter your answers as either decimals or fractions, not as percents.