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3 years ago

It should take 5.22 minutes to clean a shower. You have 5 showers that need to be cleaned. How many minutes should it t

Mathematics

2 answers:

Eva8 [605]3 years ago

6 0

$5.22min ........1s \\ x...................5s \\\\ x=\frac{5.22min*5\not s}{1\not s} \\\\ \boxed{x=26.1 \ minutes}$

aivan3 [116]3 years ago

6 0

5.22 minutes* 5 showers = 26.1 minutes

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Semenov [28]

Simple interest is a method of calculating interest on an amount for n period of time with a rate of interest of r. The amount of monthly payments is $287.5.

<h3>What is simple interest?</h3>

Simple interest is a method of calculating interest on an amount for n period of time with a rate of interest of r. It is calculated with the help of the formula,

SI = (PRT)/100

where SI is the simple interest, P is the principal amount, R is the rate of interest, and T is the time period.

Given the following details about the simple interest loan as,

Principal amount, P = $3,000

Interest rate, r = 15%

Number of instalments = 12

Since there are 12 instalments each for a month, therefore, the time period for which the loan was there is 1 year.

Now, the interest for 1 year will be,

Interest amount = ($3,000 × 1 × 15)/100

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Further, the total amount that is needed to be paid back is the sum of the principal amount and Interest amount.

Amount needed = $3,000 + $450

= $3,450

Moreover, there are 12 instalments, therefore, the number of monthly payments will be,

Monthly payment = $3,450/12 = $287.5

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The answer to the last expression is 11, so that is the correct answer.

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