Jeff had 300 pencils and donated 30% of them. Vicki had twice as many pencils as Jeff and donated 3/4 of his pencils. How many pencils are there remaining altogether?
Jeff donated 30/100*300 = 
<gadget id="calculator">30/100*300</gadget>
<output>90</output>
90 pencils.
He remained with 300-90 = 
<gadget id="calculator">300-90</gadget>
<output>210</output>
210 pencils.
Vicki had twice as many pencils as Jeff, meaning he had 2*300 = 
<gadget id="calculator">2*300</gadget>
<output>600</output>
600 pencils.
When Vicki donated 3/4 of his pencils, he gave away 3/4*600= 
<gadget id="calculator">3/4*600</gadget>
<output>450</output>
450 pencils.
Vicki remained with 600-450=
<gadget id="calculator">600-450</gadget>
<output>150</output>
150 pencils.
Together, Jeff and Vicki remained with 150+210 = 
<gadget id="calculator">150+210</gadget>
<output>360</output>
360 pencils.

<result>360</result>