hiệu số tuổi của mai và an là :28-8=20( tuổi)
1/3 tuổi an = 1/7 tuổi mai suy ra tuổi an=3/7 tuổi mai.
tuổi an lúc 1/3 tuổi an=1/7 tuổi mai là:20:(7-3).3=15
vậy số năm từ hiện tại tới khi 1/3 tuổi an=1/7 tuổi mai là:15-8=7(năm)
Bài 1: Joel is 8 years old. His mother is 34 years old. In how many years' time will his mother's age be three times Joel's age ?
Bài 2: The average of A and B is 20. The average of B and C is 15. The average of C and D is 18. Find the average of A and D ?
( Giải giúp mk với)
Nam is younger than dad 30 years old. How many years old of Nam and his dad, know 1/2 age of Nam is 1/8 dad's age
Question 8:
The sum of age of mother and daughter is 47. Daughter is 25 years younger than mother. How old is mother?
Answer: Mother is ........ years old.
How many natural numbers not greater than 1665 which are divisible by 5?
Answer: numbers
The sum of age of father and son is 60 years old and son is 30 years younger than father. Father is years old.
The Age of Peter 8 years ago is equal to his brother 1 year ago. Right now, their sum of age is 47. How old is peter now?
Bài toán của TIMO (Thailand international mathematical olympiad)
IQ Toán - Tiếng anh
đây chỉ là câu đố thôi chứ thực ra mik biết đáp án rùi hihi =)
The sum of age of mother and daughter is 47. Daughter is 25 years younger than mother. How old is mother?
Answer: Mother is years old.
If the sum of age of mother and daughter is 48 and daughter is the age 1/3 of mother than daughter is .... years old.
If the sum of age of mother and daughter is 48 and daughter is 1:3 the age of mother. Mother than daughter is ? years old.
Who can answer this question? Threads like this: Seven years ago, the total number of 3-year-old mother is 48 years. Six years after her mother's age over the age of 30 and over adult son is 24 years old. calculate the current age of the mother. You remember all the offline presentation!
