Cassie's coin purse contains five nickels, three quarters, and two pennies. Without looking, she grabs one coin from her purse, then another.

She goes to the supermarket and also buys $8.10 worth of groceries.

What is the probability that both coins will be nickels?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.