Problema Solution
My son is seven times older than my grandson and I am 12 times older than my grandson. If you add all our ages together, the sum is 100 years. Can you tell me my age in years?
Answer provided by our tutors
Let
x = represent the age of the grandmother in year, x>0
(1/12)x = the age of the grandson
7*(1/12)x = the age of the son
If you add all our ages together, the sum is 100 years:
x + (1/12)x + (7/12)x = 100
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x = 60 years
The age of the grandmother is 60 years.