What is n-5 in algebraic expression words?

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

27 is what percent of 108? 27 is % of 108