A merchant bought 15 keyboards and 25 printers for a total of $2050. If a keyboard costs $20, how much does a printer cost?
15 keyboards at $20 per keyboard cost a total of 15*$20=$
<gadget id="calculator">15*20</gadget>
<output>300</output>
300.
The total cost of printers and keyboards is $2050 so 25 printers cost $2050-$300=$
<gadget id="calculator">2050-300</gadget>
<output>1_750</output>
1750
1 printer cost $1750/25=$
<gadget id="calculator">1750/25</gadget>
<output>70</output>
70.

<result>70</result>