Question

the sum of two natural number is 20 and while their difference is 4 find the numbers

Answer 1

let the two numbers be X and Y

sum of two numbers is 20
x+y=20...(1)
difference between two numbers is 4
x-y=4......(2)

then x=4+y
putting the value of x in eq 1

4+y+y=20
y=8
then x =16
hence two natural numbers are 16 and 4


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