how many marbles are in the jar?

Question

leslie weighs her marbles in a jar, and the scale reads 474 grams. The empty jar weighs 439 grams. Each marble weighs 5 grams

Answer 1

Weight of jar with marbles= 474 gms

 

Weight of empty jar=439 gms

 

So weight of Marbles= 474-439=35 gms

 

Weight of each marble= 5 gms

 

So no. of marbles  in jar= 35/5= 7