Question

A bottle and a cap together cost $1.10. The bottle costs $1 more than the cap. How much does each cost?

Answer 1

Let b = bottle & c = cap
We would have to use a system of equations.
So, since the bottle and cap together cost $1.10, the first equation is
b + c = $1.10
And the bottle IS $1 more than the cap (remember, is always means =)
And more means addition.
Your second equation is,
b = c + 1
Now, you're system of equations is

{ b + c = $1.10
{ b = c + 1

You can use substitution and put in the given value for b.

c + 1 + c = $1.10

Then solve for c.
x

Answer 2

Tell me if you got it. x