All categories

2 years ago

A task is completed by 30 persons in 4 days. In how many days the same will be completed by 40 persons? REASON.

Mathematics

1 answer:

dmitriy555 [2]2 years ago

4 0

As per the given data

A task is completed by 30 persons in 4 days

we are supposed to find In how many days the same will be completed by 40 persons

Task is completed by 30 persons in 4 days, it mean

30 person does one fourth of the work in one day

1 person does $\frac{1}{4*30}=\frac{1}{120}th$ of the work in one day

So back to previous step,

work done by 40 person in one day = $40*\frac{1}{120} =\frac{1}{3}$

Hence the number of days required to complete the work by 40 person =3

You might be interested in

1/2(6+3p)-3/4(8-10p)<br>Expand and simplify <br>show all steps

olganol [36]

$\frac{6+3p}{2} - \frac{3}{4} (8 - 10p) \\ \\ \frac{6 + 3p}{2} - \frac{3(8-10p)}{4} \\ \\ \frac{6+3p}{2} - \frac{3 \times 2(4 - 5p)}{4} \\ \\ \frac{6+3p}{2} - \frac{6(4-5p)}{4} \\ \\ \frac{6+3p}{2} - \frac{3(4-5p)}{2} \\ \\ \frac{6+3p - 3(4-5p)}{2} \\ \\ \frac{3(2 +p - 4 + 5p}{2} \\ \\ \frac{3(2 + (p + 5p) - 4)}{2} \\ \\ \frac{3(2+6p-4)}{2} \\ \\ \frac{3 \times 2 (1 + 3p-2)}{2} \\ \\ \frac{3 \times 2(3p - 1)}{2} \\ \\ \frac{6(3p -1 }{2} \\ \\ 3(3p - 1) \\ \\ Answer: \fbox {3(3p-1)}$

7 0

2 years ago

For each call, a certain phone company charges a connecting fee, and then a cost per minute after that. How much does each call'

Effectus [21]

The answer i got is B

4 0

2 years ago

In ΔEFG, the measure of ∠G=90°, GF = 33, FE = 65, and EG = 56. What ratio represents the sine of ∠F?

gizmo_the_mogwai [7]

<h3>Answer: 56/65</h3>

Work Shown:

sin(angle) = opposite/hypotenuse

sin(F) = EG/FE

sin(F) = 56/65

Refer to the diagram below.

5 0

2 years ago

The newspaper in Haventown had a circulation of 80,000 papers in the year 2000. In 2010, the circulation was 50,000. With x = 0

mixas84 [53]

-3000 is correct
Hope this helps :D

7 0

2 years ago

Read 2 more answers

A 16-inch candle is lit and burns at a constant rate of 0.8 inches per hour. Let t represent the number of hours since the candl

Tamiku [17]

Answer:

<h2>See the explanation.</h2>

Step-by-step explanation:

The initial length of the candle is 16 inch. It also given that, it burns with a constant rate of 0.8 inch per hour.

After one hour since the candle was lit, the length of the candle will be (16 - 0.8) = 15.2 inch.

After two hour since the candle was lit, the length of the candle will be (15.2 - 0.8) = 14.4 inch. The length of the candle after two hours can also be represented by {16 - 2(0.8)}.

Hence, the length of the candle after t hours when it was lit can be represented by the function, $f(t) = 16 - 0.8t$ . $f(t) = 0$ at t = 20.

The domain of the function is 0 to 20.

The range is 0 to 16.

8 0

2 years ago