The sum of the both number is 80
Let the first number isthe leargest number x S, the next will be 80-x
The larger number is four more than three times the smaller number
so, equation will bw : x =3(80-x)+4
x = 240-3x+4
x+3x=240+4
4x=244
x=244/4
x=61
So, the first number is 61
now the second number will be 80-x
second number = 80-61
second number =19
So, the numbers are 19 & 61
Answer : A) 19 & 21