Sanvi's grandparents is thrice as old as Sanvi's mother.After 12 years Sanvi's grandmother will be just twice the Sanvi's mother. Find their present ages.
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Let grandparent's present age = x
Mother's present age = x/3
After 12 years
Grandparent = x + 12
Mother = x/3 + 12
grandmother will be just twice the Sanvi's mother:
x + 12 = 2(x/3 + 12)
x + 12 = 2x/3 + 36
x - 2x/3 = 36 - 12
x/3 = 24
x = 72
Grand mother's present age = 72 years
Mother's present age = 72/3 = 24 years
Mother's present age = x/3
After 12 years
Grandparent = x + 12
Mother = x/3 + 12
grandmother will be just twice the Sanvi's mother:
x + 12 = 2(x/3 + 12)
x + 12 = 2x/3 + 36
x - 2x/3 = 36 - 12
x/3 = 24
x = 72
Grand mother's present age = 72 years
Mother's present age = 72/3 = 24 years
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Answer:
Step-by-step explanation:
Let grandparent's present age = x
Mother's present age = x/3
After 12 years
Grandparent = x + 12
Mother = x/3 + 12
grandmother will be just twice the Sanvi's mother:
x + 12 = 2(x/3 + 12)
x + 12 = 2x/3 + 36
x - 2x/3 = 36 - 12
x/3 = 24
x = 72
Grand mother's present age = 72 years
Mother's present age = 72/3 = 24 years
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