Mystery Number

Use the clues to help discover the mystery number. 

• It is a three digit number.
• The sum of the last two digits equals the first digit.
• The first and third digit are odd.
• The first digit is 1 more than the second.
• The sum of all three numbers is 10.

What is the mystery number?

Supermarket Grand Opening

It is the grand opening of a local supermarket.  Every 5th customer will receive a coupon for a free turkey and every 7th customer will receive a coupon for a free half-gallon of ice cream.  If 100 customers come in on opening day, how many will get a free turkey and a free half gallon of ice cream?