Question

John took all his money from his savings account. He spent ​$154 on a radio and 4/7 of what was left on presents for his friends. Of the money​ remaining, John put 6/11 into a checking account and the last remaining ​$300 was left to charity. How much money did John originally have in his savings​ account?

Answer 1

savings balance = x
radio = 154
friends = 4/7 (x-154)
checking = 3/7 (x - 154) * 6/11
charity = 300
so,
x = 154 + 4/7 (x-154) + 3/7 (x - 154) * 6/11 + 300
so now just solve for x.