Question

in fourteen years time a mother will be twice as old as her son .four years ago th sum of tier was 30 years.find how old was the mother when the son was born

Answer 1

m+14 = 2 (s+14)
m -4 + s-4 = 30

m + 14 = 2s + 28
m + s = 38
-----------------------------subtract
0 +14 - s = 2 s - 10
24 = 3 s
s = 8
so m = 30
so m is 22 years older than s

Answer 2

Please can you explain how to do the sum

Answer 3

thanks allot