At a concert there were 20% more women than men and 30% more boys than girls. There were as many males as females. Altogether 840 people were there. How many girls were there?
Opening the drawing…
MathBrush is being tested with a few parent groups, and every solution on the site is open to them. If you were given a code, it goes in once and this device remembers it. 65 worked examples are free to everyone without one.