The cafeteria ordered 400 paper plates they use 226 at breakfast they bought 100 more then they use some plates for lunch now they have 78 plates how many plates did they use at lunch

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.)