6. Darryl can drive 600 kilometers on one tank of gasoline. If 1 kilometer is equivalent to
approximately 0.62 miles, about how many
miles can Darryl drive on one tank of gasoline?

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.