Mary does her grocery shopping on Saturday. She does her shopping only at a specific store where she is allowed a credit of $100, which must be paid in full before her next shopping trip. That week she spent the full credit limit and paid $15 of it on Tuesday and $23 of it on Thursday. How much credit will Mary need to pay before her next shopping trip?
So far, Mary has paid back $15 +$23=$
<gadget id="calculator">15+23</gadget>
<output>38</output>
38 of the credit.
So she still needs to pay $100-$38=$
<gadget id="calculator">100-38</gadget>
<output>62</output>
62.

<result>62</result>