alleryഒരു അച്ഛന് മകന്റെ പ്രായത്തിന്റെ മൂന്നിരട്ടി പ്രായമുണ്ട്. 12 വർഷത്തിൽ അദ്ദേഹത്തിന് ഇരട്ടി പ്രായമുണ്ടാകും. അച്ഛന്റെ ഇപ്പോഴത്തെ പ്രായം
A36
B48
C30
D42
Answer & Solution
Correct answer: A. 36
3x + 12 = 2(x + 12), x = 12, അപ്പോൾ പിതാവ് 36 ആണ്.
Keep practising Ratio and Proportion
Browse all Ratio and Proportion questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
If the ratio of boys to the whole class is 3 : 8, the ratio of boys to girls isA 40 kg mixture has A, B, C, D in the ratio 5 : 9 : 4 : 2. The amount of B isA screen has a 4 : 3 aspect ratio and is 32 cm wide. Its height isIn metrology, a ratio is a dimensionless quotient of two quantities measured inBoys are 3/8 of a class and number 60. How many girls are there?A ratio is 7 : 13. The first term is what percent of the total of both terms?The ratio 3 : 5 expressed as a percentage means the first is what percent of the second?If 3 : x = 12 : 20, then x is