해법
해법
솔루션 단계
Translate the problem into an equation:
해결 대상
age 찾다
인기 있는 예
Alex is a quarter the age of Jenny. In 4 years time, Jenny will be 3 times the age of Alex.How old is Jenny now?six less than the product of 9 and a number is equal to 7Two hikers, Alan and Ben, are 21 miles apart and walking towards each other. They meet in 6 hours. Find the rate of each hiker if Ben walks 0.3 mph faster than Alan.If 800 is invested at an interest rate of 3.75% per year, compounded quarterly, find the value of the investment after 2 yearsnegative three times a number plus four is no more than the number minus eight