Paul had some candy to give his five children. He first took ten pieces for himself and then evenly divided the rest among his children. Each child received three pieces. With how many pieces did he start>

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?