On a certain hot​ summer's day, 523 people used the public swimming pool. The daily prices are $1.75 for children and $2.50 for adults. The receipts for admission totaled How many children and how many adults swam at the public pool that​ day?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.