Problema Solution
Each day, the sum of the average times spent on grooming for 20-to-24- year-old women and men is 90 minutes.The difference between grooming times for 20-to24-year old women and men is 20 minutes. How many minutes per do 20-to-24 year- old women and men spend on grooming?
Answer provided by our tutors
let
x = the average time of 20-to-24- year-old women
y = the average time of men
the sum of the average times spent on grooming for 20-to-24- year-old women and men is 90 minutes:
x + y = 90
the difference between grooming times for 20-to24-year old women and men is 20 minutes:
x - y = 20
by solving the system of equations:
x + y = 90
x - y = 20
we find
x = 55 min
y = 35 min
click here to see the step by step solution of the system of equations
20-to-24 year- old women spend 55 min on grooming.
men spend 35 min on grooming.