75 children attend a youth club. The ratio of boys to girls is 2:1. How many boys are there?
Think about it this way. 2x+1x as the ratio and it would equal the total, or 75. Your equation would be 3x=75. This would make the x value equal to 25. Since the ratio is 2:1, meaning there would be double the amount of boys than girls, you multiply the 2 in the ratio by what the "x" is to find the amount of boys.
