Quandaries and Queries

Name: Janelle

Who is asking: Other
Level: All

the stable boy had 90% of the kings horses groomed.the next day the king acquired 25% more horses. Now there was 105 horses not prepared for the kings men. How many horses did the king originally have?

Hi Janelle,

Suppose that the number of horses the king started with was H. The stable boy groomed 90% of them, that is 0.9  H. The king acquired 25% more horses so now he has 1.25  H horses. The difference between 1.25  H and 0.9  H is the number that are not prepared, which is 105. What is H?


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