The <em>correct answer</em> is:
$30.
Explanation:
Writing the transaction amounts as signed integers, we have:
+30, -20, -30, +40, -50
We want to add these together. Addition is commutative, which means we can add the positive integers before the negative:
30+40+(-20)+(-30)+(-50)
70+(-20)+(-30)+(-50)
We can now add the negative integers together:
70+(-50)+(-50)
70+(-100)
Adding these together, we have
-30
This means we would need at least $30 to avoid overdrafting the account.
This is super simple, as it's just asking us to divide by 5.
5x=60
Divide both sides by 5, and we have our answer.
x = 12
If you encounter more questions like this, just look at it in a different perspective and it's really simple from there.
(5+9-3)a = (15+29)
11a= 44
a= 4
. ( m →(N v Q)) →((M→N) v (M→Q))
2.((T v U) → V) → (T → (U → V)) wut tyhe hell is this