Wabbitbat265idn
Answered

Suriin ang IDNStudy.com para sa mabilis at kaugnay na mga sagot. Makakuha ng mabilis at eksaktong sagot sa iyong mga tanong mula sa aming mga eksperto na laging handang tumulong.

In a certain family, a boy has as many sisters as he has brothers; however, each sister has only one-half as many sisters as brothers. How many brothers and sisters are there in this family?

Sagot :

Mlcparra16idn
Since for a boy he has an equal number of brothers and sisters the number of boys is x+1 while there are x girls

The number of sisters for a girl is equal to half the number of boys so the number of boys is y and the number of girls is (y/2)+1.

[tex](x+1)+x=y+ \frac{y}{2} +1 \\ 2x= \frac{3y}{2} \\ x= \frac{3y}{4} [/tex]

The LHS is the total number of children for the boy and the RHS is the total number of children for the girl.

We substitute the value of x to y

[tex] \frac{3y}{4} +1=y \\ 3y+4=4y \\ 4=y[/tex]

Since the number of boys is 4 the number of girls is [tex] \frac{4}{2} +1=2+1=3[/tex].


Poriidn
3 brothers and sisters are there in this family.
Natutuwa kami na ikaw ay bahagi ng aming komunidad. Patuloy na magtanong at magbahagi ng iyong mga ideya. Sama-sama tayong magpapaunlad ng kaalaman para sa lahat. May mga katanungan ka? Ang IDNStudy.com ang may sagot. Salamat sa iyong pagbisita at sa muling pagkikita.