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LoginSSC Test Questions Three years ago the average age of A and B was 18 years. If C joins them today, the average becomes 22 years. How old is C now?
Social Sciences Secondary School in Social Sciences 1 year ago
of A and B = 18 yearsSo, (A+B)÷2 = 18Now after three years and adding C,(A+B+C)÷3 +3 = 22, Equation-{1}So, (A+B+C+9)÷3 = 22 A+B+C+9 = 66 A+B+C = 57 A+B = 57-CSo, Putting value of A+B in Equation 1,(57-C)÷2 = 1857-C = 36So, C = 57-36 = 21So, C will be 21 years old.
Posted on 16 Sep 2024, this text provides information on Social Sciences related to Secondary School in Social Sciences. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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