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Archy [21]
3 years ago
7

30 marbles in a bag. 10% of them were blue and 60% of them were red. The rest are yellow. How many of the marbles are yellow?

Mathematics
1 answer:
Sidana [21]3 years ago
8 0

Answer:

Step-by-step explanation:

Ok, so we know that there are 30 marbles

to find the amount of blue marbles we need to find 10percent of 30

10percent of 30= 30/10=3

3blue mables

60percent of 30=18

18red marbles

18+3=21

30-21=9 yellow marbles

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This question requires creating a few equations and working through them step-by-step. Now, first let's give each of the shapes a variable: let's say that the blue shape is a, the orange shape is b and the green shape is c.

1. We can technically create six formulas for the magic square, with three for sum of the rows and three for the sum of the columns, however the smartest way to approach this is to observe whether there are any obvious answers that we can get.

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