Question 1
Out of three students, the first age is 25% less than the second one and 50% less
than the third one respectively, if the average age of the three students is 102,
Then the age of the second one is?
Answers
Step-by-step explanation:
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Given : Out of three students, the first age is 25% less than the second one and 50% less than the third one respectively,
the average age of the three students is 102,
To Find : the age of the second one is
Solution:
Age of second one = 4x
Age of first one = 4x - (25/100)4x = 3x
Age of first one = Age of 3rd one - (50/100) Age of 3rd one
=> 3x = Age of 3rd one /2
=> Age of 3rd one = 6x
3x , 4x and 6x are the ages
Sum = 13x
Average = 13x/3
13x/3 = 102
=> x = 306/13
=> 4x = 4 * 306/13
=> 4x ≈ 94.15
Age of the second one 94.15 years
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