They are the same length. You need to find the common denominator (8) and multiply both the numerator and denominator on 3/4 to ger 6/8. Than, just draw a numberline comparing the lengths! Hope this helped

8 0

3 years ago

Three postal workers can sort a stack of mail in 20 minutes, 30 minutes, and 60 minutes, respectively. Find how long it takes

Step2247 [10]

Answer: 10 minutes

Step-by-step explanation:

Given : Three postal workers can sort a stack of mail in 20 minutes, 30 minutes, and 60 minutes, respectively.

Let T be the time taken by all of them when they working together.

Then , we have the following equation :-

$\dfrac{1}{T}=\dfrac{1}{20}+\dfrac{1}{30}+\dfrac{1}{60}\\\\\Rightarrow\dfrac{1}{T}=\dfrac{3+2+1}{60}\\\\\Rightarrow\dfrac{1}{T}=\dfrac{6}{60}=\dfrac{1}{10}\\\\\Rightarrow T=10$

Hence, the time taken by all of them when they working together = 10 minutes.

4 0

3 years ago

Calvin starts a new computer business, he makes a profit of $800 during the first month , and then for the next two months recor

laila [671]

Answer:

800+700+700+3000 is what will get you your answer 5200 is your answer

Step-by-step explanation:

4 0

3 years ago

During a field trip, 60 students are put into equal-sized groups. Use 60 ÷ 5 = 12 to answer this question. If 5 represents the n

solniwko [45]

Answer:

12 is the number of people in each group.

Step-by-step explanation:

12 would be the number of people in each group. because as you divide 60 to 5..... 12 people are divided sperately into 5 groups.. hope this helps and if you have any questions go ahead and ask! JESUS LOVES YOU

6 0

2 years ago