Question

Janet can make 4/5 of a necklace in 20 minutes. At this rate how many necklace to the nearest tenth of a necklace can Janet make in 1 hour

Answer 1

Answer:

Janet can 2 4/10 of a neckalace in an hour.

Step-by-step explanation:

20 minutes is 1/3 of 60 minutes so...

4/5 x 3 = 12/5 = 2 2/5 = 2 4/10

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Answer 2

Fraction number is the ratio of the part or portion of a number to the whole number. The number of necklace made by the Janet in the round to the nearest tenth is 2.

Given information-

Janet can make 4/5 of a necklace in 20 minutes.

Let calculate the amount of necklace made by Janet in 1 minute.

The given work is in the form of fraction number.

Fraction number

Fraction number is the ratio of the part or portion of a number to the whole number.

As Janet makes 4/5 necklace in 20 minutes, thus to calculate the 1 minute work of the Janet the work need to be divided by the time taken by her. Thus,

$=\dfrac{\dfrac{4}{5} }{20}$

$=\dfrac{4}{5\times20} }$

$=\dfrac{1}{25}$

Thus she makes 1/25 part of the neckless in one minutes.

Let number of necklace made by the Janet in the 1 hour is n. As there are total 60 minutes in one hour, thus,

$n=\dfrac{1}{25} \times60$

$n=\dfrac{12}{5}$

Thus the number of necklace made by the Janet in the 1 hour is 12/5.

The value is in the fraction. In the decimal form,

$n=\dfrac{12}{5}$

$n=2.4$

Thus the number of necklace made by the Janet in the round to the nearest tenth is 2.

Learn more about the fraction number here;

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