<human>:  Olivia gave William 10 napkins. Amelia also gives William twice the number of napkins Olivia gave him. If William had 15 napkins before, how many napkins does he have now?
<bot>: How many napkins did William have after Olivia gave him 10 napkins? ** After Olivia gave William 10 napkins, he ends up with 15+10= <<10+15=25>>25 napkins.
How many napkins does Amelia give William? ** Amelia gives William twice the number of napkins given to him by Amelia which is 2*10 = <<2*10=20>>20 napkins.
How many napkins does William have now? ** The total number of napkins William has now is 20+25 = <<20+25=45>>45 napkins.
#### 45