Five years ago, the average age of punit and amrita was 15 years. Average age of punit, amrita and renu today is 20 years. How old will renu be after 12 years?
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let ages of punit and amrita be x,y respectively
according to question
[(x-5)+y-5]/2 = 15
therefore [x+y-10] = 30
x + y = 40 ----eq. 1
now
let age of renu = z
[x+y+z]/3 = 20
40 + z = 60
z = 20
therefore renu is 20 years old now
this means that renu will be 32 years old after 12 years
pls mark as brainliest if helpful
according to question
[(x-5)+y-5]/2 = 15
therefore [x+y-10] = 30
x + y = 40 ----eq. 1
now
let age of renu = z
[x+y+z]/3 = 20
40 + z = 60
z = 20
therefore renu is 20 years old now
this means that renu will be 32 years old after 12 years
pls mark as brainliest if helpful
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