Accenture Company Numerical Ability Averages

The average age of a group of 24 students is 18 years. If 6 more students join the group, the average age increases by 1 year. The average age of the new students is
A) 24 B) 26 C) 23 D) 25

Read Solution (Total 1)

total age of 24 students = 18*24 => 432
total age of (24+6) 30 students = 19 *30 => 570
total age of 6 students = (19*30) - (18*24) = 132
the average age of new students = 132/6 =23

the answer is C
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Accenture Other Question

The proportion of milk and water in three samples is 3:2, 7:5 and 5:3. A mixture comprising of equal quantities of all three samples is made. The proportion of milk and water in the mixture is
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A) 15 years B) 10 years C) 20 years D) 14 years