Given that R is directly proportional to S and that R =141 when S = 5, find the constant of proportional and calculate the value of x when R =70?

1 Answer
Jim G.
Aug 7, 2018

#S=350/141#

Explanation:

#"Given "RpropS#

#"to convert to an equation multiply by k the constant"#
#"of variation"#

#R=kS#

#"to find k use the given condition"#

#R=141" when "S=5#

#R-kSrArrk=R/S=141/5#

#"equation is "R=(141S)/5#

#"when "R=70" then"#

#S=(5R)/141=(5xx70)/141=350/141#

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