Question

Annette has a bag of marbles that weighs 500 g. The bag contains 20,000 cg of red marbles, 1,000 dg of yellow marbles, and some blue marbles. How much do the blue marbles weigh? 200 g 20,000 g 2,000 g 20 g

Answer 1

200 grams.

Explanation:

-We are given the total weight of the bag as 500grams

-Also given is, 20000cg of red marbles and 1000 dg of yellow balls and blue marbles.

#First we convert all units into grams:

`20000cg=20000* 0.01=200\ grams\\\\1000dg=1000* * 0.1=100\ grams`

#we then subtract the sum of the given weights from the total weights to get weight of the blue marbles:

`B_w=500-(200+100)\\\\=200\ grams`

Hence, the weight of the blue marbles is 200 grams.