Question

The ratio of the number of dolls Jacky had to the number of dolls Peter had was 5:2 but, after Jacky gave 15 dolls to Peter, they have an equal number of dolls. How many dolls did they have altogether?​

Answer 1

Answer:

70

Step-by-step explanation:

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Answer 2

Answer:

70 dolls

Step-by-step explanation:

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The ratio is 5:2, which are division of  a whole. They can be represented as 5x and 2x.

Jacky has 5x dolls, and Peter has 2x dolls. They were equal after subtracting 15 dolls from 5x and adding them to 2x.

Equation:

• 5x - 15 = 2x + 15

Solve:

• 5x - 15 = 2x + 15
• 5x - 30 = 2x
• 5x = 2x + 30
• 3x = 30
• x = 10

So Jacky has 5(10) dolls, or 50 dolls, and Peter has 2(10) or 20 dolls.

The total sum is 70 dolls.