Answer:
The answer is 400
Step-by-step explanation:
Withdraw means to take out, deposit means to put in. So you adding and subtracting all the numbers. 400-50+70-20= 400
200+300=500
200+300=500 or 100+400=500
$487.20
The answer is $487.20 if he expects to deposits $830.
unknown value of what mate