Four years ago, Tina is 18 years younger than Ruchi. If present total age of Ruchi and Tina is 50 years, then find the ratio between present age of Tina to present age of Ruchi?

Four years ago –

(T – 4) + 18 = (R −4)

R - T = 18 … (i)

Given, R + T = 50 … (ii)

From (i) and (ii)

2R = 68

R = 34 years

T = 16 years

Required ratio = $frac{{16}}{{34}} = 8:17$