It belongs to system of equations.
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

let b = the speed of the boat in still water and c = the speed of the current. now we have;

during the trip downstream b + c = 336 / 12 = 28  --->>>  b+c = 28 mph (1)

during the trip back b - c = 336 / 14 = 24  --->>>  b - c = 24 mph (2)

(1) + (2) = 2b = 52   so  b=52/2   --->>>  b=26 mph   (1)-(2) = 2c = 4  c=4/2   c = 2 mph = current speed

speed of boat in still water;  from (1) we get b=28-2=26 mph speed in still water

of caurse the same result if we take the (2)  we get  b-c=24 -->>  b=24+2=26 mph = speed in still water
by Level 5 User (13.1k points)
edited by

Related questions

Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,097 questions
90,231 answers
2,058 comments
60,048 users