Our math team had m students last year, but this year it has already n students! by what percent did the number of students grow? pls just the answer! thx

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Pls! does anybody know a shortcut for answering these types of questions in the future?

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.