200 children were in a concert There were 4 times as many girls than boys How many girls were there?

If there were 4 times as many girls as boys, we can represent the number of boys as x and the number of girls as 4x. The total number of children is 200, so we can write the equation x + 4x = 200. Combining like terms, we get 5x = 200. Solving for x, we find x = 40. Therefore, there were 4 * 40 = 160 girls at the concert.