A train travels at a constant speed of 80 miles per hour. How many miles will the train travel in 15 minutes?

I’m stuck on this i don’t understand.

Convert 2000 swiss francs to dutch guilders

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?