George donated half his monthly income to charity and spent $20 from the other half on groceries. If he now has $100 left, how much was his monthly income? Let's think step by step and output the final answer after "####".
user
Half his monthly income is $100+$20 = $<<100+20=120>>120
His monthly income therefore is 2*$120 = $<<2*120=240>>240
#### 240
George donated half his monthly income to charity and spent $20 from the other half on groceries. If he now has $100 left, how much was his monthly income?
train