Question

The sum of the age of a woman and her daughter is 46 years.In 4 years the ratio of their age will be 7:2.How many years time will the sum of their age be 66 years

Answer 1

well to make it easy just add 10 to each so in ten years:
but if you insist
w + d = 46
(w+4)/(d+4) = 7/2

d = (46 - w)
(w+4) / (50-w) = 7/2
2 w + 8 = 350 - 7 w
9 w = 342
w = 38
d = 46 - 38 = 8
now
8+x + 38 + x = 66
46 +2x = 66
2x = 20
x = 10
remarkable :)

Answer 2

*GASPS* 🙀