280 oranges

280 oranges are divided among 50 girls and boys so that each boy gets 5 oranges and each girl gets 7 oranges. How many girls are there?

Correct answer:

a =  15

Step-by-step explanation:

a+b=50 280 = 7a + 5b  280=7a+5(50a)  280=7 a+5 (50a)  2a=30  a=230=15  a=15   Verifying Solution:   b=50a=5015=35 s=7 a+5 b=7 15+5 35=280



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







Tips for related online calculators
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: