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ഒരു പിതാവിന് മകനേക്കാൾ ഇരട്ടി പ്രായമുണ്ട്. ഇരുപത് വർഷം മുമ്പ് അദ്ദേഹത്തിന് മകൻ്റെ പ്രായത്തിൻ്റെ 6 ഇരട്ടിയായിരുന്നു. അച്ഛൻ്റെ ഇപ്പോഴത്തെ പ്രായം എത്ര ?

A100

B25

C50

D80

Answer:

C. 50

Read Explanation:

മകൻ്റെ വയസ്സ് = X അച്ഛൻ്റെ വയസ്സ് = 2X 20 വർഷം മുൻപ് മകൻ്റെ വയസ്സ് = X - 20 അച്ഛൻ്റെ വയസ്സ് = 6(X - 20) 2X = 6(X -20) + 20 2X = 6X - 120 + 20 100 = 4X X= 100/4 = 25 അച്ഛൻ്റെ വയസ്സ് = 2X = 50


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