cement is mixed with sand in the ratio 1:3 to make a building mixture
(1) if a bag of cement weighs 50kg, how much kg of sand should be added?
(2) how many bags of cement should be mixed with 2250kg of sand?
(3) 30 bags of cement are mixed with 4500kg of sand,show the means of calculations that the ratio is correct
PLEASE HELP ONCE AGAIN DANKIE