Victor had 321.8 dollars, andrey had 15.8 dollars more than victor had. david had 5 times less than victor and andrey had together. how many dollars did each boy have?

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)