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A runner finished a total of 1,500 kilometers in races before retiring . She finished thirty-two 15-kilometer races . The rest of her races were 10- kilometer races how many of her races were 10- kilometer races?

Respuesta :

absor201

102 of runner's races were 10-kilometer races.

Step-by-step explanation:

Given,

Total kilometers finished = 1500 km

Number of 15 km races = 32

Number of 10 km races = x

Therefore;

15*32+10x=1500

[tex]480+10x=1500\\10x=1500-480\\10x=1020[/tex]

Dividing both sides by 10

[tex]\frac{10x}{10}=\frac{1020}{10}\\x=102[/tex]

102 of runner's races were 10-kilometer races.

Keywords: variable, division

Learn more about division at:

  • brainly.com/question/12973601
  • brainly.com/question/13063819

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