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liubo4ka [24]
3 years ago
13

There are many toys in a kindergarten. The ratio of the number of dolls to the number of balls to the number of cars is 7:8:5. I

f the total number of dolls, balls, and cars is 80, then how many of each type of toy are there?
Mathematics
1 answer:
ANEK [815]3 years ago
8 0

Answer:

Number of Dolls = 28.

Number of Balls = 32.

Number of Cars = 20.

Step-by-step explanation:

Given the ratio of the number of dolls to the number of balls to the number of cars is 7 : 8 : 5.

Suppose the highest common factor of the three numbers be 'X'.

Then, Number of Dolls = 7x

Number of Balls = 8x

Number of Cars = 5x

Given the total number of dolls, balls, and cars is 80.

It means 7x + 8x + 5x = 80.

20x = 80

x = 80/20 = 4.

So, Number of Dolls = 7*4 = 28.

Number of Balls = 8*4 = 32.

Number of Cars = 5*4 = 20.

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Let x = no. of 10 oz cups sold
Let y = no. of 14 oz cups sold
Let z = no. of 20 oz cups sold
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Equation 1: total number of cups sold:
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Equation 2: amt of coffee consumed:
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Equation 3: total revenue from cups sold
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Multiply eq 4 by .055 and subtract from eq 5:
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