해법
해법
솔루션 단계
Translate the problem into an equation
Solve the equation
인기 있는 예
The present age of Alex is four times the present age of his son. Five years ago, the sum of their ages was 35 years.Find their present ages.60 is 24% of what numberwhat is the balance after 7 years if 54000 is invested at 6% compound annuallyfind the 원둘레 of a circle having 3.1 cm of diameterWhen a number is increased by 9.5%, the result is 58. What is the original number to the nearest tenth?