Question

the product of the numbers denoting the ages ( in years) of 2 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

 

Hope This Helps :)