What number is the smallest out of 60%, 0.61, 57%, 0.616 and 13/20?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

32a³b² 8ab² simplify the following expression.

(25 ! ) what does it mean for an equation to have no solution or infinitely many solutions?