Pupils - class

There are 28 pupils in the class. The ratio of boys to girls is 3:5. Find the number of girls.

Correct answer:

b =  17.5

Step-by-step explanation:

a+b=28  a:b=3:5 = a/b  5a = 3b  3b/5+b=28  3 b/5+b=28  8b=140  b=8140=17.5  b=235=17.5



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Check out our ratio calculator.
Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: