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Alex_Xolod [135]
2 years ago
9

Pete can do a job in 50 minutes while his brother Jim can do it in 1/2 the time. How long will it take them to do the job workin

g together? (50/3 min)
Mathematics
1 answer:
Kryger [21]2 years ago
7 0

It will take them 20 minutes to do the job working together.

<h3><u>Working time calculation</u></h3>

Given that Pete can do a job in 50 minutes while his brother Jim can do it in 1/2 the time, to determine how long it will take them to do the job working together, the following calculation must be performed:

  • 1/1 + 2/1 = 3/1
  • 1 / (3/1) = 1/3
  • 60 min / 3 = 20 min

Therefore, it will take them 20 minutes to do the job working together.

Learn more about working time calculation in brainly.com/question/536439

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goldenfox [79]

The initial population at time t = 0 was 0.39 while the size of the bacteria population after 4 hours was 6553600

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Let y represent the bacteria population at time t. a represent the initial population at t = 0. Since the doubling period of a bacteria population is 10 minutes, hence:

y=a(2)^\frac{t}{10}

At time t = 110 minutes, the bacterial population was 800. Hence:

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At 4 hours (240 minutes):

y=0.39(2)^\frac{240}{10} =6553600

The initial population at time t = 0 was 0.39 while the size of the bacteria population after 4 hours was 6553600

Find out more on equation at: brainly.com/question/2972832

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Answer:

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2) Collect like terms

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