There was 5/8 of a pizza left but Jeff only wanted to eat 1/2 of what was left. How much pizza will Jeff eat?​

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%