Seudónimo Seudónimo

01-12-2020
Mathematics

contestada

In a jar of marbles, the ratio of green marbles to black marbles is 3:5. If the jar contains 21 green marbles, how many black marbles are in the jar?

green 3 21
black 5 ?

Your answer:

10

12

30

35

Respuesta :

micheleartessa micheleartessa

01-12-2020

Answer:

there are 35 black marbles in the jar

Step-by-step explanation:

3*7=21

so..

5*7=35

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