At this same time in 2010, 78% of people said they went out dancing at least one night a month. Recently, this number has increased by only 2%. What is the recent percentage of people that go out dancing once a month?

Respuesta :

Answer:

79.56%

Step-by-step explanation:

In year, 2019, 78% of people said they went out dancing at least one night a month.

Let number of people go for dancing be x

Let total number of people be y

Percentage of people go for dancing = [tex]\dfrac{x}{y}\times 100[/tex]

Therefore, [tex]\dfrac{x}{y}\times 100=78[/tex]

[tex]\dfrac{x}{y}=.78[/tex]

[tex]x=0.78y[/tex]

Recently, this number has increased by only 2%.

New number of people go for dancing = x + 2% of x

                                                                = [tex]x+0.02x[/tex]

                                                                = [tex]1.02x[/tex]

New percentage go for dancing in a month [tex]=\dfrac{1.02x}{y}\times 100[/tex]

                           [tex]=\dfrac{1.02\times 0.78y}{y}\times 100[/tex]

                           [tex]=79.56\%[/tex]

Hence, 79.56% of people go out dancing once a month.