Answer:
$240
Step-by-step explanation:
We can set this up by making an equation: x + 2x + 40 = 760.
Now we can solve.
x + 2x + 40 = 760 (combine like terms (x))
3x + 40 - 40 = 760 - 40 (subtract 40 from both sides)
3x / 3 = 720 / 3 (divide by 3 to isolate x)
x = 240
Because Emma has $x, she has $240 in her bank account.
You can check this by substituting this value for x in our original equation.