Problema Solution
if the number of cosmetic surgeries (in thousands) preformed in some year on persons under the age of 18 is multiplied by 2 and then decreased by 4, the result is the number (In thousands) of cosmetic surgeries preformed on persons over the age of 65 that year. If there were 90 (thousand) such surgeries performed on persons over age 65, find the number of cosmetic surgeries performed on persons under age 18.
Answer provided by our tutors
let
x = the number of cosmetic surgeries performed on persons under age 18 (in thousands)
the number of cosmetic surgeries (in thousands) preformed in some year on persons under the age of 18 is multiplied by 2 and then decreased by 4 thousands, the result is 90 (thousands) the number (In thousands) of cosmetic surgeries preformed on persons over the age of 65 that year
2x - 4= 90
by solving we find:
x = 47
click here to see the step by step solution of the equation:
the number of cosmetic surgeries performed on persons under age 18 is 47 thousands.