# ACT Math 4.4 Pre-Algebra

ACT Math: Pre-Algebra Drill 4, Problem 4. Using the information given, find out how many girls attend the school.

ACT Math | Pre-Algebra |

ACT Mathematics | Pre-Algebra |

Foreign Language | Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled |

Language | English Language |

Pre-Algebra | Ratio, proportion, and percent Ratios |

Product Type | ACT Math |

Ratios, Percentages, and Proportions | Ratios |

### Transcript

So obviously this is a GREAT school to attend if you're a boy who likes going out Saturday nights.

It's a simple ratio problem. The problem tells us that the boys to girls ratio is:

3x boys and 4x girls. Meaning... there are more girls than boys...

It also gives the TOTAL number of students, which is 245.

There's a simple ratio here. 4 out of 7 students are girls.

So the ratio is "4 is to 7 as x is to 245."

To get the answer, we cross multiply to get 7x equals 4 times 245...

...or 7x equals 980.

To solve for x... which is the number of boys in the school... we divide both sides by 7

to get x = 140.

The answer is E.

As in, "Edwina."