해법
James drove to his brother’s house, which was 225 miles away. It took him 3 hours to get there. What was his average speed per hour?
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Maryl is 3 years older than Shaira. 10 years ago, the sum of their ages was 40.When six is subtracted from half of a number, the result is-18. What is the original number?the larger of two numbers is nine less than four times the smaller number. if the sum of two numbers is 76, find both numbersWilliam's uncle is 32 years older than he is. In 15 years' time, his uncle will be double William's age. How old is William's uncle now?The larger of two numbers is nine less than four times the smaller number. If the sum of the two numbers is 76, find both numbers