Mike and Molly started making sandwiches for a fundraiser. Mike makes a sandwich every 4 seconds and Molly makes a sandwich every 5 seconds. How many sandwiches did Mike make by the time they made a sandwich at the same time?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.