Question 1113176
John took all his money from his savings account.
 He spent ​$88 on a radio and 1/4 of what was left on presents for his friends.
 John then put 4/11 of his remaining money into a checking account and donated the $420 that was left to charity.
 How much money did John originally have in his savings​ account?
:
let a = original amt in the savings account
:
"He spent $88 on a radio and 1/4 of what was left on presents for his friends."
Therefore he kept 3/4 of what was left
{{{3/4}}}(a - 88) 
({{{3/4}}}a - 66) left
:
John then put 4/11 of his remaining money into a checking account and donated the $420 that was left to charity.
a = {{{4/11}}}({{{3/4}}}a - 66) + 420 
a = {{{3/11}}}a - 24 + 420
a = {{{3/11}}}a + 396
a - {{{3/11}}}a = 396
{{{8/11}}}a = 396
a = {{{11/8}}}*396
a = $544.50 originally in his saving acct
:
Seems like we should have an even dollar amt here it checks out