Question

Pregunta 6
Compound X is made up of two parts A and one part B. The mass of compound X is 45, and A has twice the mass of B. Which two equations would you solve to find the individual masses of A and B?

Answer 1

Answer:

$A = 2B$

$A + B = 25$

Step-by-step explanation:

Given

The first statement implies that:

$X = A + B$ i.e the components of X

Reading further, we have:

$X = 45$ ---- The mass of X

$A = 2B$ --- The relationship between $A\ and\ B$

Required

Two equations to represent the scenario

The two equations are:

$A = 2B$ --- The relationship between $A\ and\ B$

$X = A + B$ i.e the components of X

Substitute 25 for X in the second equation

$25 = A + B$

$A + B = 25$

So, the equations are:

$A = 2B$

$A + B = 25$