Question

Two numbers have a difference of 0.7 and a sum of 1. What are the numbers?

Answer 1

If the numbers are x an y we have:-

x + y = 1
x - y = 0.7 Adding:-

2x = 1.7
x = 0.85


y = 1 - 0.85 = 0.15


Answer:- the 2 numbers are 0.85 and 0.15 Answer

Answer 2

0.85 and 0.15

simultaneous equations.