Question

20 yrs ago when my parents get married, their average age was 23 yrs , now the average age of my family , consisting of myself and my parents only is 35 years . My present age is​

Answer 1

Explanation:

(m+d) / 2 = 23 or m+d = 46 <======given

then twenty years later

(m+20 + d+20 + y ) / 3 = 35 where y = your age

(m+d + 40 + y ) / 3 = 35 we know m+d = 46 ....substtitute that in

( 46 + 40 + y) / 3 = 35

86 + y = 105

y = 19 y/o