Three years ago, Nora was half as old as Mary is now. If Mary is four years older than Nora then Mary is years old now.
Three years ago, Nora was half as old as Mary is now. If Mary is four years older than Nora then Mary is years old now.
Jane is 15 years old. She is twice as old as Mary was when Jane was as old as Mary is now. How old is Mary now?
??????????????????????????????????????????????
Mary is 24 years old. She is twice as old as Bella was when Mary was as old as Bella is now.
How old is Bella now?
Ana's current age (a) is what maria's age was x years ago
a = 24 - x
x years ago, Maria's age (24 - x) was twice Ana's age (a - x)
2(a - x) = 24 - x
put 24 - x in for a in the second equation:
2(24 - x - x) = 24 - x
48 - 4x = 24 - x
24 = 3x
8 = x
Plug this back into a = 24 - x to find a, Ana's current age:
a = 24 - 8
Ana is currently 16.
da ko biet giai con ghi bang Tieng anh!
Alice’s mother is now four times as old as she. Four years ago, her mother was thirty years more than her. How old is Alice now?
dịch em trai ơi
đọc xơ qua chị giải dc bài này bằng tiếng anh đấy
Mẹ của Alice bây giờ đã bốn lần so với mẹ. Bốn năm trước đây, mẹ cô đã được ba mươi năm nhiều hơn cô. Alice bây giờ bao nhiêu tuổi?
bn muốn hỏi j vậy
Bn nhok nhân mã thiếu bn trai dịch hơi sai nha!
Dịch: Mẹ của Alice tuổi gấp 4 lần cô ấy. Bốn năm trước mẹ cô ấy hơn cô 30 tuổi.Hãy tính tuổi Alice bây giờ.
Bài này giải dễ thôi. Bn áp dụng công thức tính hiệu tỉ là ra ngay.
Question 1: What is 1/6 of 744? Answer: 124
Question 2: Express seventy thousand, four hundred and nine in numerals. Answer: 70409
Question 3: Study the pattern. 88:8=11 880:8=110 8800:8= ? The missing number is 1100
Question 4: Subtract 346 from 752. Answer: 406
Question 5: The ratio of boys to girls at a school is 5:4. If there are 255 boys at the school then how many students are there at the school? Answer: 459 students.
Question 6: The product of 2 different natural numbers is 9. Their sum is 10
Question 7: Jack, Mary and Jacob buy ice creams. Jack buys twice as many as Mary. Jacob buys three times as many as Jack. If Jacob buys 12 ice creams then Mary buys 2 ice creams.
Question 8: My giant flower doubles its size every day. On Friday, it is 5 ( hay 10 gì đó ) times as big as its was on the preceding Sunday.
Question 9: If we write all of the whole numbers from 10 through 99 and cross out any number in which the first or second digit is divisible by 2 (for example, 41 is crossed out as 4 is divisible by 2 and 36 is crossed out as 6 is divisible by 2), how many numbers are crossed out? Answer: 65 numbers.
Question 10: It takes Bella three hours to clean a house. It takes Anna two hours to clean the house. How long would it take for them to clean it together? Answer: 72 minutes.
Câu hỏi 1: Điều gì là 1/6 của 744? Trả lời: 124
Câu hỏi 2: Thể hiện bảy mươi ngàn, 409 bằng chữ số. Trả lời: 70.409
Câu hỏi 3: Nghiên cứu mô hình. 88: 8 = 11 880: 8 = 110 8800: 8 =? Số còn thiếu là 1100
Câu hỏi 4: Trừ 346 từ 752. Trả lời: 406
Câu hỏi 5: Tỷ lệ trẻ em trai cô gái tại một trường học là 5: 4. Nếu có 255 trẻ em trai tại trường sau đó có bao nhiêu sinh viên đang học tại trường? Câu trả lời:. 459 sinh viên
Câu hỏi 6: Các sản phẩm của 2 số tự nhiên khác nhau là 9. tổng của chúng là 10
Câu hỏi 7: Jack, Mary và Jacob mua kem. Jack mua gấp đôi so với Mary. Jacob mua ba lần so với Jack. Nếu Jacob mua 12 kem sau đó Mary mua 2 kem.
Câu hỏi 8: bông hoa khổng lồ của tôi tăng gấp đôi kích thước của nó mỗi ngày. Hôm thứ sáu, nó là 5 (hay 10 gì đó) lần lớn như nó đã vào trước ngày Chủ nhật.
Câu 9: Nếu chúng ta viết tất cả các số nguyên từ 10 đến 99 và gạch bỏ bất kỳ số trong đó chữ số đầu tiên hoặc thứ hai được chia hết cho 2 (ví dụ, 41 được gạch chéo là 4 là chia hết cho 2 và 36 được gạch chéo là 6 chia hết cho 2), có bao nhiêu số đang vượt qua? Câu trả lời:. 65 số
Câu hỏi 10: Mất Bella ba giờ để làm sạch một ngôi nhà. Phải mất Anna hai giờ để dọn dẹp nhà cửa. Bao lâu nó sẽ đưa cho họ để làm sạch nó với nhau? Trả lời: 72 phút.
Cau 8 Phan Ba Cuong sai, phai la 32 lan
Question 5:
A set of five different numbers has an average of 12. If the average of four smallest numbers is 10 then the greatest number is
I have two sisters, Mary and Jane, and two brothers, John and Tom. Mary is nineteen. Jane is five years younger than Mary, but she is two years older than Tom. Tom is four years younger than me, and he is seven years younger than John. So how old are they? who are the twins ?
Mary is 19.
So Jane is: 19 - 5 = 14 ( years old)
Tom is: 14 - 2 = 12 ( years old)
You are: 12 + 4 = 16 ( years old)
And John is: 12 + 7 = 19 ( years old)
So Mary and John are the twins.
my mother is 24 years old and 6 time as old I was many years ago. now she is three times as old as I am. how old is she now
When my mother was 24 years old, I was: 24:6=4 (years old)
==> The difference between my mother's age and my age that time was: 24 - 4 = 20 (years old)
Because the difference between my mother's age and my age never changes, so now, she is 20 years older than me.
We have a diagram: Bạn vẽ sơ đồ tuổi con hiện nay (My age now) với 1 phần, tuổi mẹ hiện nay (My mother's age now) với 3 phần bằng nhau như thế. (tự vẽ nha)
==> My mother's age now is: [20: (3-1)] * 3 = 30 (years old)
Answer: 30 years old
các bạn nhìn ở đây cho dễ
III. Reading Use the suitable words in the box to complete the text Near old to garden bathroom small new I live in a house (example) …near….the sea. It’s an (1)……………………..house, about 100 years old, and it’s very (2) ……………………..There are two bedrooms upstairs but no (3) ……………………..The bathroom is downstairs next (4) ……………………..the kitchen and there is a living room where there’s a lovely fireplace. There’s a garden in front of the house. The (5) ……………………..goes down to the beach and in spring and summer there are flowers everywhere. Read the text and answer the questions I have two sisters, Mary and Jane, and two brothers, John and Tom. Mary is nineteen. Jane is five years younger than Mary, but she is two years older than Tom. Tom is four years younger than me, and he is seven years younger than John. 1. Who is the youngest? 2. How old is Tom? 3. Is Jane younger than me? 4. Am I the oldest in my family? 5. Who are the twins?
