Mr brown spends his monthly salary of $1440. He spends on food 1/4, on transport 30%, on bill 30% and on rent? Find how much does he spend on rent

To find out how much Mr. Brown spends on rent, we first need to calculate how much he spends on food, transport, and bills.

Food: 1/4 of $1440 = $360
Transport: 30% of $1440 = 0.30 x $1440 = $432
Bills: 30% of $1440 = 0.30 x $1440 = $432

Now, let's add up his expenses on food, transport, and bills to find out how much he has spent in total so far.
$360 (food) + $432 (transport) + $432 (bills) = $1224

To find out how much he has spent on rent, we subtract the total amount spent on food, transport, and bills from his monthly salary.
$1440 (monthly salary) - $1224 (spent on food, transport, and bills) = $216

Therefore, Mr. Brown spends $216 on rent.