Matthew ran 3 miles in 15 minutes at a constant speed. How long would it take him to run 12 miles at the same speed?

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.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection