Boys and girls

There are 28 girls in the hall. 5/7 of all children are boys. How many children and how many boys are there?

Result

c =  70
s =  98

Solution:


c+28 = s
5/7 s = c

c-s = -28
7c-5s = 0

c = 70
s = 98

Calculated by our linear equations calculator.

Try another example


Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Tips to related online calculators
Need help calculate sum, simplify or multiply fractions? Try our fraction calculator.
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Following knowledge from mathematics are needed to solve this word math problem:

Next similar math problems:

  1. Pears
    hrusky_4 There were pears in the basket, I took two-fifths of them, and left six in the basket. How many pears did I take?
  2. Orchard
    tree_2 3/5 of the trees in the orchard are apples, 1/3 are cherries and the remaining five trees are pear. How many trees are in the orchard?
  3. Cleaning windows
    windows Cleaning company has to wash all the windows of the school. The first day washes one-sixth of the windows of the school, the next day three more windows than the first day and the remaining 18 windows washes on the third day. Calculate how many windows ha
  4. Fruits
    jablka_15 Amy bought a basket of fruits 1/5 of them were apples,1/4 were oranges, and the rest were 33 bananas. How many fruits did she buy in all?
  5. Classroom
    school_5 One-eighth of 9th class was interested in studying at a grammar school, at a business academy one sixth, at secondary vocational schools quarter, to SOU one third and the remaining three students were interested in the school of art direction. How many st
  6. New bridge
    bridge Thanks to the new bridge, the road between A and B has been cut to one third and is now 10km long. How much did the road between A and B measure before?
  7. One third
    one-third If 3/5 is 360, how much is 1/3?
  8. Eq-frac
    fractions14 Solve the following equation with fractions: h + 1/3 =5/3
  9. Eqn
    fractal_16 Solve equation with fractions: 2x/3-50=40+x/4
  10. Fraction + eq
    eq1 Solve following simple equation with fractions: -5/6(8+5b) = 75 + 5/3b
  11. Unknown number
    fractions_6 I think the number - its sixth is 3 smaller than its third.
  12. Simple equation 3
    equilateral_triangle_2 24 = n • 27, solve for n
  13. Find unknown
    eq222_26 Find unknown numerator: 4/8 + _/8 = 1
  14. Equation
    eq Solve equation and check the result: 1.4x - 3/2 + x - 9,8 = x + 0,4/3 - 7 + 1,6/6
  15. Equation 15
    eq222_4 Solve equation with variables on both sides:
  16. Simple equation
    axes_1 Solve for x: 3(x + 2) = x - 18
  17. Given
    1998-4b Given 2x =0.125 find the value of x