Problema Solution
the difference between ages of two cousins is 10 years. 15 years ago ,if the elder one was twice as old as the younger one,find their present ages
Answer provided by our tutors
Let
x = the present age of the elder cousin, x>0
y = the present age of the younger cousin, y>0
x>y
the difference between ages of two cousins is 10 years:
x - y = 10
15 years ago the elder one was twice as old as the younger one:
x - 15 = 2(y - 15)
We have the following system of equations:
x - y = 10
x - 15 = 2(y - 15)
........
click here to see all the system of equations solution steps
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x = 35 years
y = 25 years
The present age of the elder cousin is 35 years.
The present age of the younger cousin is 25 years.