madelinebeasey madelinebeasey

17-11-2020
Mathematics

contestada

A bag contains 150 marbles. Some are blue, and the rest are white. There are 21 blue marbles for every 4 white marbles. How many blue marbles are in the bag? Explain your reasoning.

Respuesta :

theemilygray132 theemilygray132

17-11-2020

Answer:

126

Step-by-step explanation:

21 + 4 = 25 (blue plus white marbles)

150/25 = 6 (all the marbles divided by how many we know are white and blue)

21 x 6 = 126

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