Level 3
There are some blue and yellow marbles in a container. If 10 blue marbles are removed from the container, the total number of marbles left will be 8 times the number of blue marbles left. If 5 yellow marbles are removed from the container, the total number of marbles left will be 5 times the number of blue marbles. How many marbles are there in the container?
Level 3
Jenny gave 3 books to every boy
and 5 books to every girl in her class.
There were 4 more boys than girls in the class. She gave away a total of 156 books.
How many children were there in the class?
How many less books were given to the boys than the girls?
Level 3
Jenny gave 3 books to every boy
and 5 books to every girl in her class.
There were 4 more boys than girls in the class.
She gave away 24 more books to the girls than the boys.
Level 3
Bryan bought 4 times as many candy bars as chocolate bars.
The total mass of candy bars and chocolate bars was 1040 g.
The mass of chocolate bars was 240g less than that of the candy bars.
The mass of 1 chocolate bar was 48 g heavier than 1 candy bar.
Level 3 Rael bought some notebooks at $3 each. He later sold them to his customers at $8 each. For customers who bought two notebooks were given another notebook for free. The customers bought either one or two notebooks. Rael gave away 110 free notebooks and collected a total of $1320 more than what he had paid for. How many customers bought just one notebook?
