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BlackZzzverrR [31]
3 years ago
10

A bag contains yellow marbles and blue marbles, 73 in total. The number of yellow marbles is 7 more than 5 times the number of b

lue marbles. How many yellow marbles are there?
Mathematics
1 answer:
Roman55 [17]3 years ago
8 0

Answer:

number of yellow marbles=62.

Step-by-step explanation:

It is given that in a bag there are yellow marbles and blue marbles and the total number of marbles=73.

Let the number of Blue marbles=x, then according to the question, number of yellow marbles will be =5x+7.

Now, Total number of marbles= number of yellow marbles+number of blue marbles.

⇒73=x+5x+7

⇒73-7=6x

⇒66=6x

⇒x=11

Therefore, numberof blue marbles=x=11 and

number of yellow marbles=5x+7=5(11)+7=55+7=62.

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Answer:

r = 16

Step-by-step explanation:

Cross multiply:

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Simplifying

4 x 20 = r x 5

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Reorder the terms for easier multiplication:

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Add '-5r' to each side of the equation.

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80 + -80 + -5r = 0 + -80

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Combine like terms: 0 + -80 = -80

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Simplify

r = 16

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