###Human: 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?, ### Assistant: Jeff donated 30/100*300 = 90 pencils.
He remained with 300-90 = 210 pencils.
Vicki had twice as many pencils as Jeff, meaning he had 2*300 = 600 pencils.
When Vicki donated 3/4 of his pencils, he gave away 3/4*600= 450 pencils.
Vicki remained with 600-450=150 pencils.
Together, Jeff and Vicki remained with 150+210 = 360 pencils. 
 So the answer is :  360