Question

petit high school has one thousand two hundred and fifty-two learners.the number of girls is three times more than the number of boys.how many girls are at petit high school​

Answer 1

939 girls

Explanation:

Let us start by writing an equation. We can set the number of boys as x, and the number of girls as 3x since the number of girls is three times the number of boys:

Step 1, writing an equation:

`1252=3x+x`

We will assume in this case, that the number of girls plus the number of boys adds up to the total number of learners at Petit High School

Step 2, solving the equation:

We can simplify the above equation and isolate the term containing x.

`1252=4x\\x=313`

Step 3, determining values:

• We know that we set # of boys as x and we have just solved for x. Therefore, there are 313 boys in the high school.
• We have set # of girls as 3x, so
  `3*313=939` girls in the high school

There are
`\fbox{939}` girls at Petit High School.

I hope this helps! Let me know if you have any questions :)