解
Mark is three times as old as Heaven. Three years ago, Mark was four times as old as Heaven. What is the sum of their ages?
解
解答ステップ
Translate the problem into an equation:
を解く
発見する the sum of their ages :
人気の例
Elsa is 9 years older than Anna. Five years ago, the sum of their age is 51. What is the present age of Anna?Jamie is 5 years older than Nicole. Two years ago, Jamie was twice as old as Nicole. How old are they now?Mario is twice as old as Peter. The sum of their ages 4 years ago was 37. Find how old they are nowLawrence is 9 years younger than Ariane. If the sum of their ages is 49, how old is Lawrence?Tim is 5 years older than Joann. Six years from now the sum of their ages will be 79. How old are they?