MATHEMATICS MIDDLE SCHOOL

A drawer has some red ,green and blue marbles.there are 33 marbles . there are 4 times as many red marbles as green marbles.there are half as many blue marbles as green marbles.how many blue marbles are in the drawer?

Answers

Answer 1
Answer:

Answer:

The number of blue marbles be 3.

Step-by-step explanation:

As given

A drawer has some red ,green and blue marbles.

There are 33 marbles .

there are 4 times as many red marbles as green marbles.

Let us assume that the number of green marbles be g .

Than Red marbles = 4g

There are half as many blue marbles as green marbles.

Than

Number\ of\ blue\ marbles =\frac {Number\ of\ green\ marbles}{2}

Number\ of\ blue\ marbles =(g)/(2)

Than the equation becomes

g + 4g + (g)/(2) = 33

Than simplify the above

2g + 8g + g = 33* 2

11g = 66

g= (66)/(11)

g = 6

Number\ of\ blue\ marbles =(6)/(2)

Number of blue marbles = 3

Therefore the number of blue marbles be 3 .
Answer 2
Answer: g-green\ marbles\nr-red\ marbles\nb-blue\ marbles\ng+r+b=33\n\n4g-red\ marbles\n(1)/(2)g-blue\ marbles\n\ng+4g+(1)/(2)g=33\n\n5(1)/(2)g=33\n\n(11)/(2)g=33\ \ \ \ /\cdot(2)/(11)\n\ng=3\n\nAnswer:b=(1)/(2)g\to b=(1)/(2)\cdot6=3

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Answers

Answer:

Step-by-step explanation:

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Erica earns a rebate each month on her meals and movie tickets. She earns $3 for each movie ticket and $0.80 for each meal. Last month Erica purchased 15 meals and earned $18.Part A: Create an equation that will determine the number of movie tickets she purchased. (3 points)

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