The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total
students are in the class?
Ratio of boys : girls = 5:7 or how about 5x : 7x
so 5x = 15
wouldn't there be 5x + 7x or 12x students ?
take it from here.
5/7=15/x, x=21
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In a gym class, the ratio of girls to the total number of students is 7:10. There are 9 boys in the gym class. How many students are in the gym class
21 people on trip ratio boys to girls is 2:5 how many girls went in trip
Correct answers
To find the total number of students in Mr. Joiner's class, we need to determine the ratio between boys and girls. Given that the ratio of boys to girls is 5 to 7, we know that for every 5 boys, there are 7 girls.
Since we already know there are 15 boys in the class, we can use this information to determine the number of girls. To do that, we'll set up a proportion:
Boys / Girls = 5 / 7
Substituting the given values:
15 / Girls = 5 / 7
Now, cross-multiply to solve for the number of girls:
15 * 7 = 5 * Girls
105 = 5 * Girls
Divide both sides of the equation by 5:
105 / 5 = Girls
Girls = 21
So, there are 21 girls in Mr. Joiner's class.
To find the total number of students in the class, we simply add the number of boys to the number of girls:
Total Students = Number of Boys + Number of Girls
Total Students = 15 + 21
Total Students = 36
Therefore, there are 36 total students in Mr. Joiner's class.