解
8 years from now John will be 34 years old. The current sum of the ages of John and Mary is 52. How old is Mary right now?
解
解答ステップ
Translate the problem into an equation:
を解く
発見する Mary's age
人気の例
2 Find the value of an investment of 1200 in an account that earns 3% annual interest compounded quarterly after 4years.A triangle has a base of 7 meters and a height of 3 meters. What is the 面積 of the triangle?8000 dollars is placed in an account with an annual interest rate of 6.55%. How much will be in the account after 15 years, to the nearest centAdam opened a savings account and deposited 6,189.00 as principal. The account earns 8% interest, compounded annually. What is the balance after 9 years?Latrell puts 3,996.00 into an account to use for school expenses. The account earns 3% interest, compounded annually. How much will be in the account after 5 years?