85.) एक माँ की आयु उसके पुत्र की आयु की तीन गुनी है । पाँच वर्षपहले पुत्र अपने पिता की आयु का 1/6वाँ भाग था । यदि उसके पिता, माँकी आयु से पाँच वर्ष बड़ा हो, तो पुत्र की आयु क्या होगी?(a) 15 वर्ष(c) 10 वर्ष(b) 12 वर्ष(d) 18 वर्ष About the author Lydia
Step-by-step explanation: Answer: 8yrs, 40yrs Step-by-step explanation: let the present age of son be x years. therefore present age of mother is 5x years according to question \begin{gathered}5x + 8 = 3(x + 8) \\ 5x + 8 = 3x + 24 \\ 5x – 3x = 24 – 8 \\ 2x = 16 \\ x = 8\end{gathered} 5x+8=3(x+8) 5x+8=3x+24 5x−3x=24−8 2x=16 x=8 therefore sons age = 8 yrs mother age = 5x = 5×8 = 40yrs Reply
Step-by-step explanation:
Answer:
8yrs, 40yrs
Step-by-step explanation:
let the present age of son be x years.
therefore present age of mother is 5x years
according to question
\begin{gathered}5x + 8 = 3(x + 8) \\ 5x + 8 = 3x + 24 \\ 5x – 3x = 24 – 8 \\ 2x = 16 \\ x = 8\end{gathered}
5x+8=3(x+8)
5x+8=3x+24
5x−3x=24−8
2x=16
x=8
therefore sons age = 8 yrs
mother age = 5x = 5×8 = 40yrs