Mathematics: One pipe can fill a pool in 9 hours. Another pipe can fill the pool in 6 hours. How long would it take them to fill the pool if they were working together?

One pipe can fill a pool in 9 hours. Another pipe

Ответ:

kaliaakh

23.01.2022

Mathematics

One pipe can fill a pool in 9 hours.

1/9part

Another pipe can fill the pool in 6 hours.

1/6part

if they were working together

1/9+1/6(3+2)/185/1818/53.6 hours

Hence,

if they working together the poll fills with 3.6 hours

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Ответ:

1963038660

16.08.2022

Mathematics

1.75% and 16 times

Step-by-step explanation:

Compound interest formula:

$\sf A=P(1+\frac{r}{n})^{nt}$

where:

A = final amountP = initial principal balancer = annual interest rate (in decimal form)n = number of times interest applied per time periodt = number of time periods

Given:

P = $600r = 7% = 0.07n = 4t = 4

Substituting given values into the formula:

$\sf \implies A=600(1+\frac{0.07}{4})^{4 \times4}$

$\sf =791.9576107...$

Equivalent interest rate:

$\sf \implies \dfrac{r}{n}= \dfrac{0.07}{4}=0.0175=1.75 \%$

Number of times compounded:

$\sf \implies nt=4 \times 4=16$

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One pipe can fill a pool in 9 hours. Another pipe can fill the pool in 6 hours. How long would it take them to fill the pool if they were working together?

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