in 3 years' time, the sum of the ages of a and b will be 27. b' s age is the difference between his own and a's ages. how old is b? mọi người giúp mình nhé mình đang cần gấp ý. Mình cảm ơn nhiều ạ!

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)

HELLO MY NAME IS TRUNG TODAY I HAVE ONE MATHS FOR EVERYONE THE MATHS IS : ONE DAY ONE MAN ASKED ANOTHERMAN MR.1 :my family have four people me wife me and two son. the total age 2 brother is 40 years old 4 years ago my age is 5 times your age and four time my age is the same as my mother my age is half the sum of 2 times his age and mother age.please calculate the total age of the family.

Lesson 1: I ask her, "How old are you this year?" "One sixth of a six-year-old is six years old," she said. How old are you?

Lesson 2: The sum of the two numbers is 873. The large number is the product of the number of the smallest and the largest number with a digit. Find two of them.

Lesson 3: How old are you? Dad more than 30 years old. Calculate the age of each person

11. 5 years ago the brother’s age was the same as the age of his sister 4 years later, the sum of his age 2 years later and his sister 8 years later is 97. What is the age of the sister today?

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 =)

Jim’s present age is one fifth of his mother’s age. After 7 years, the ratio of their ages will become 1 : 3. How old is his mother now?

1) The difference beetween two number is 3. Their sum is 33. What are the two number?

2) Agnes is 10 years old. Her mother Lisa is 4 times as old as Agnes. How old will Lisa be when Agnes is twice as old as. She is now?...........years old

3) Eric is in a building. He is 5m above the ground. He climbs up 4 flights of stairs, each of wich is 3m hight. How hights Eric now above the ground?

1) The difference beetween two number is 3. Their sum is 33. What are the two number?

2) Agnes is 10 years old. Her mother Lisa is 4 times as old as Agnes. How old will Lisa be when Agnes is twice as old as. She is now?...........years old

3) Eric is in a building. He is 5m above the ground. He climbs up 4 flights of stairs, each of wich is 3m hight. How hights Eric now above the ground?