Question

There are two numbers. Two conditions for them are: (1) Sum of these
two numbers are 100; (ii) One number is four times another number.
what are these numbers​

Answer 1

Step-by-step explanation:

let the 1st number be x

let the 2nd number be y

condition1- sum of these two number is 100

x + y = 100.......1

condition2- one number is four times the other number

x - 4y =0........2

by 1 and 2,we get

by elimination method ,we get the value of y

(y=20)

putting the value of y in equation 2

x-4y=0

x-4(20)=0

x-80=0

x=80