Math word problems please help

Question

1. Adams salary is $55,000 a year and he earns 65% as much as his friend John. What is johns salary rounded to the nearest dollar?

2. Clare purchased a car for $23,400 that was on sale for 18% off. What was the presage price of the car?

3. Write an equation that expresses fact that P varies with T and inversely with V. Leave your constant of variation as k. Also determine the value of k if when T= 300 and V= 25 then P= 15

Answer 1

1. what does "65% as much" mean? If I say I make as much as you, that is pretty clear. If I say I make 90% as much of you, that sounds like I make 90% of what you make. If I say I make 110% as much as you, then I would think that would mean I make 10% more than you. We'll assume 65% as much as John mean that Adams makes 65% of what John makes. So John's salary would be $55,000/.65.

 

2. x (1 - .18) = $23,400

 

3. P = k T/V; 15 = k*300/25.