###Human: A craftsman makes 16 jars. This is exactly twice the number of clay pots he made. If each jar has 5 marbles and each clay pot has three times as many, how many marbles are there?, ### Assistant: 16 jars are exactly twice the number of clay pots made by the craftsman, meaning there are 16/2=8 clay pots
If each jar has 5 marbles, the total number of marbles in the jars is 5*16=80
Each of the clay pots also has 3*5=15 marbles.
The total number of marbles in the 8 clay pots is 15*8=120
There are a total of 120+80=200 marbles. 
 So the answer is :  200