Let's break down the transactions step by step:
- You start with $600.
- You write a check for $200, which subtracts $200 from your balance: \[ 600 - 200 = 400 \]
- You then deposit $100, which adds $100 to your balance: \[ 400 + 100 = 500 \]
So, after these transactions, your expected balance should be $500. However, the bank's app shows you have $400.
To find out how much the bank's balance shown in the app is off, we calculate the difference between your expected balance ($500) and the balance shown in the app ($400):
\[ 500 - 400 = 100 \]
The bank's balance is off by $100, and since it shows a lower amount, the response is:
It is $100 too low.