S + 1/4=12/1/2 what is s

john can shovel a certain driveway in 50 minutes if mar can shovel the same driveyway in 20 minutes how long will it take them t

Assoli18 [71]

John and Mar need 14 minutes complete shovel their driveway together, to the nearest minute.

<h3>What is rate of doing work?</h3>

You can use this computation to determine the hourly value of each employee's job, allowing you to more effectively and efficiently plan your staffing needs in the future.

This is crucial because it enables you to determine the ideal workforce size based on your average hourly wage.

According to the question;

by calculating the fraction of unit work that each individual can finish in a given amount of time together work is estimated.

Mary can clear 1/20 of a driveway in a minute, but John can clear 1/50 of it in that time.

The both will do the same job in;

= (1/20) + (1/50)

= (5/100) + (2/100)

= 7/100

They'll be finished when they've cleared 100 percent of the driveway, therefore the equation we must finally solve is:

7x = 100.

x = 100/7

x = 14.28

Therefore, when John and Mar will work together, they will shovel the driveway in 14 minutes (to the nearest minute).

To know more about work rate, here

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4 0

1 year ago

Arletta built a cardboard ramp for

Nostrana [21]

Answer:

525

Step-by-step explanation:

25 x 6 = 150; 150 / 2 =75; 75 x 7 = 525

3 0

3 years ago

You invest $25/month at a rate of 3.25% APR compounded monthly for 30 years. What is the total interest earned and final balance

VikaD [51]

The total interest earned is 40.75 and the final balance is 65.75

<u>Solution:</u>

Given, principle amount P = 25

Interest rate $r = 3.25\% = \frac{3.25}{100} = 0.0325$

Times compounded per year n = 12

Time in years t = 30

$Amount \ A=P\left(1+\frac{r}{n}\right)^{n t}$

On substituting the values we get

$A = 25 [ 1+ \frac{0.0325}{12}]^{12\times30}= 25 [2.63]= 65.75$

Interest I = A - P [since, A = P+I]

$\Rightarrow 65.75 - 25= 40.75$

7 0

3 years ago

Archie is stranded in a war zone in the land of the Xhosas. His only chance of survival is to reach Sudland, which lies 100 mile

LenaWriter [7]

Answer:

The chances of success for Archie is $P(S|D) = 35\%$

Step-by-step explanation:

From the question we are told that

The distance of Sudland from Xhosas is d = 100 miles

The probability of failure is $P(F) = 0.26$

The probability of choosing the desert route is $P(D) = \frac{1}{40} = 0.025$

The probability of reaching Sudland through the mountain is $P(S|M) =0.75$

Generally the probability of choosing the mountains route is

$P(M) = 1 - P(D)$

$P(M) = 1 - 0.025$

$P(M) = 0.975$

Generally the probability of success is mathematically represented as

$P(S) = 1- P(F)$

$P(S) = 1- 0.26$

$P(S) = 0.74$

Generally the probability of success in reaching Sudland is also mathematically represented as

$P(S) = P(S|M) * P(M) + P(S|D) * P(D)$

=> $P(S|D) = \frac{P(S) - P(S|M) * P(M)}{P(D)}$

substituting values

=> $P(S|D) = \frac{0.74 - 0.75 * 0.975}{0.025}$

=> $P(S|D) = 0.35$

=> $P(S|D) = 35\%$

8 0

3 years ago

Solve for x. Round to the nearest tenth, if necessary.

Nina [5.8K]

Answer:

15.4 (rounded to 1dp)

Step-by-step explanation:

5 0

3 years ago