John took all his money from his savings account. He spent $52 on a radio and 1/2 of what was left on presents for his friends, Of the money remaining, John put 4/13 into checking account and the last remaining $180 was left to charity. How much money did John originally have in his savings account?

John had $572 in his savings account.

Step-by-step explanation:

Let the total amount John took from his savings account be T.

He spent $52. That means he has $(T - 52) left.

He then spent 1/2 of what was left on presents for his friends. That is:

Which means he is left with another half of what was left, that is,

Of the money remaining, John put 4/13 into checking account.

This means that he is left with 9/13 of .

We are told that this is equivalent to the last remaining $180 that John left to charity.

=>

Hence:

=> T = 520 + 52 = $572

Hence, John took $572 from his savings account. Since this is all he had in his savings account, John had $572 in his savings account.

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3. 12.15, you are correct.

4.2.01, your first digit is correct,

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