The average age of fifteen persons is 32 years. If two more persons are added then the average is increased by 3 years. The newpersons have an age difference of 9 years between them. The age (in years) of the elder among the new persons is:
given the average age of 15 people is 32yrs
so,total sum of ages =32*15=480
if two more persons are added then then average is increased by 3 years
the age of two persons has difference of 9
let the ages be x,x+9
so $$\frac{\left(\left(2x+9\right)+\left(sumof15people\right)\right)}{17}$$=32+3
$$\frac{\left(2x+9+480\right)}{17}=35$$
2x+489=595
2x=106
x=53
question is asked to find the age of new elder person
i.e;x+9=53+9=62
hence answer is option A
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