해법
해법
솔루션 단계
Represent the number with
A.T.Q.:
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After 1 year the father age will be 4 times the age of his son. After 5 years the father age will be three times the age of his son. Find the age of the father and his sonWhat is the result when the number 66 is decreased by 8%?Caleb types 100 words in 5 minutes. What is the 구성 단위 rate?the product of a number and 7 is 1418 is 30% of what number?