It takes for them to clean it together:
3 hours + 2 hours = 5 hours
=> They clean a house 5 hours
sai sai rồi .làm chung thì số thời gian phải ít đi chứ.
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?
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?
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?
dịch đề rồi giải giúp luôn nhé!
GLOBAL VIOLYMPIC đó!
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.
Question 1:
Subtract 346 from 752.
Answer:
Question 2:
Study the pattern.
88:8=11
880:8=110
8800:8= ?
The missing number is
Question 3:
Divide 2016×2016 by 2016. The quotient is
Question 4:
What is of 744?
Answer:
Question 5:
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 ice creams.
Question 6:
100 hundreds + 1000 tens = ones
Question 7:
My giant flower doubles its size every day. On Friday, it is times as big as its was on the preceding Sunday.
Question 8:
The product of 2 different natural numbers is 9. Their sum is
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: 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: minutes.
GLOBAL VIOLYMPIC.
It took 2 hours for canoe to travel up stream from A to B and 6 hours for it to travel down stream from A to B. How long did it take for the group of azollas to float along the stream from A to B?
Charlie and Lily go on a 24 km run. They both usually run at 9 km/h. If Charlie runs at 2/3 his usual running speed, and Lily runs at 4/3 times her usual speed, how many more hours does it take Charlie to complete the run than it takes Lily to complete the run?
Charlie and Lily go on a 24 km run. They both usually run at 9 km/h. If Charlie runs at 2/3 his usual running speed, and Lily runs at 4/3 times her usual speed, how many more hours does it take Charlie to complete the run than it takes Lily to complete the run?
charlie and lily go on a 24km run. they both usually run at 9 km/h. If charile runs at 2/3 his usual running speed, and Lily runs at 4/3 times her usual speed , how many more hours does it take charlie to complete the run than it takes lily to complete the run .
* dịch và làm giúp mink nha . mai mình thi rồi !
