Lying against the wind, a jet travels 2950mi in 5 hours. flying with the wind, the same jet travels 7650mi in 9 hours. what is the rate of the jet in still air and what is the rate of the wind?

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Paul can type 60 words per minute and jennifer can type 80 words per minutes.how does paul's typing speed compare to jennifer's