Jenny's local library received 50 visitors on Monday. On Tuesday, the library received twice that number. On the remaining days of the week, an average of 20 visitors went to the library. What's the total number of visitors who went to the library that week?
On Monday, there were 50 visitors. On Tuesday, there were twice as many, so 2*50 = 100 visitors.
The total number of visitors after Tuesday will be 100+50 = 
<gadget id="calculator">100+50</gadget>
<output>150</output>
150 visitors.
For the remaining 5 days, an average of 20 visitors attended, giving a total of 5*20 = 
<gadget id="calculator">5*20</gadget>
<output>100</output>
100 visitors.
The total number of visitors who visited the library for the week was 100+150 = 
<gadget id="calculator">100+150</gadget>
<output>250</output>
250 visitors.

<result>250</result>