Liam works in a toy store that sells bags of marbles.He puts 10 marbles in each bag, and 4/10 of the marbles are striped.if liam makes 3 bags of marbles, how many striped marbles does he need? Yesterd

Liam works in a toy store that sells bags of marbles.He puts 10 marbles in each bag, and 4/10 of the marbles are striped.if liam makes 3 bags of marbles, how many striped marbles does he need?

Yesterday Liam used 20 striped marbles to fill bags. How many non-striped marbles did he use to fill the bags?