Jim is given $10 every day. if he spends $7 every day and saves the rest, how much does he save in a week?

Amount saved every day

$ 10 - $7 = $3


Amount saved in a week

$3 x 7 = $21


$21

21 dollars
Because if he gains 10 dollars every day for a week multiply 10 by (for the days in a week) and you should get 70. Then because he uses 7 of those 10 dollars multiply 7 by 7 to get 49 and that is how much he used so then you need to take 70 and subtract 49 which should give you 21