At present, a mother is 3 times older than her son. after 5 years, the sum of their ages will be 70 years. the age of the mother after 10 years will be
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let age of son be x
so age of mother = 3x = y
after 5 yrs their sum of ages = 70
so (x+5) + (y+5) = 70
x+5+3x+5 = 70
4x+10 = 70
4x=60
x = 15
so present age of son = 15yrs
present age of mother = 3×15 = 45yrs
so after 10 yrs her age is = 45+10 = 55yrs
so age of mother = 3x = y
after 5 yrs their sum of ages = 70
so (x+5) + (y+5) = 70
x+5+3x+5 = 70
4x+10 = 70
4x=60
x = 15
so present age of son = 15yrs
present age of mother = 3×15 = 45yrs
so after 10 yrs her age is = 45+10 = 55yrs
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