Question

Bobby has a bag containing 2 sizes of marbles. The big ones weigh 10 g and the small ones weigh 3 g. If there are three times as many small ones as big ones and the bag weighs 209 g, how many big marbles does he have?

Answer 1

as i told earlier, solve it.

its just the number of balls getting varied.
let n be the no. of bigones then, small one =3n
therefore u hav,
10n+3*3n=209 and so n=11.

Answer 2

ok thank you again