Question

The product of the numbers denoting the ages (in ages) of two adults is 770. what is the sum of their ages (in years)?

Answer 1

ANSWER:
Sum of their ages is 57years.

EXPLANATION:
X*Y=770
Y=770/X

10*77=770
Hence sum of ages is
10+77=87 years

But as both individuals in this problem are adults & in India 21 is the age limit to be considered an adult
Let's start with 21

Let X=21 Then Y=770/X
Y=770/21=36.6666
Which can't be valid as ages should be whole numbers

Let X=22 then Y=770/22=35
As both ages are whole numbers,
Sum of ages=22+35=57

All further increments of X
give fractional values of Y or Y is less than 21


So the only valid combination of numbers above 21 which yield a product of 770 is (22,35)
or (35,22) in either case sum will be 57years

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Answer 2

twenty seven years..