Subtract $11.36 from $100 and you'll get $88.64 and then just subtract $47.82 and the answer is $40.82. Not sure if u know how to subtract but just line the decimals up and take the smaller number away from the bigger one so in this case it would just be 100-11.36=88.64 and since he spent more money it would be 88.64-47.82=40.82
so start off by adding both the $11.36 and $47.82 which gives you $59.18 then minus that (take it away) from the $100 which gets you to your answer $40.82.
11.36 + 47.82 = 59.18
100-59.18 = (remember your units for your answer) $40.82
